diff --git a/src/blackcore/airspacemonitor.cpp b/src/blackcore/airspacemonitor.cpp
index e1eb0e9df..9b85ab283 100644
--- a/src/blackcore/airspacemonitor.cpp
+++ b/src/blackcore/airspacemonitor.cpp
@@ -705,21 +705,23 @@ namespace BlackCore
         // some checks for special conditions, e.g. logout -> empty list, but still signals pending
         if (this->isConnected() && remoteAircraft.hasValidCallsign())
         {
-            const QString msg = QString("Ready for matching '%1' with model type '%2'").arg(callsign.toQString(), remoteAircraft.getModel().getModelTypeAsString());
-            const CStatusMessage m = CMatchingUtils::logMessage(callsign, msg, getLogCategories());
+            const QString readyMsg = QString("Ready for matching '%1' with model type '%2'").arg(callsign.toQString(), remoteAircraft.getModel().getModelTypeAsString());
+            const CStatusMessage m = CMatchingUtils::logMessage(callsign, readyMsg, getLogCategories());
             this->addReverseLookupMessage(callsign, m);
             emit this->readyForModelMatching(remoteAircraft);
         }
         else
         {
-            const CStatusMessage m = CMatchingUtils::logMessage(callsign, "Ignoring this aircraft, not found in range list", getLogCategories());
+            const CStatusMessage m = CMatchingUtils::logMessage(callsign, "Ignoring this aircraft, not found in range list, disconnected, or no callsign", getLogCategories());
             this->addReverseLookupMessage(callsign, m);
         }
     }
 
     void CAirspaceMonitor::onAtcPositionUpdate(const CCallsign &callsign, const BlackMisc::PhysicalQuantities::CFrequency &frequency, const CCoordinateGeodetic &position, const BlackMisc::PhysicalQuantities::CLength &range)
     {
-        Q_ASSERT(CThreadUtils::isCurrentThreadObjectThread(this));
+        Q_ASSERT_X(CThreadUtils::isCurrentThreadObjectThread(this), Q_FUNC_INFO, "wrong thread");
+        Q_ASSERT_X(sApp, Q_FUNC_INFO, "Need sApp");
+
         if (!this->isConnected()) { return; }
         const CAtcStationList stationsWithCallsign = m_atcStationsOnline.findByCallsign(callsign);
         if (stationsWithCallsign.isEmpty())
@@ -959,7 +961,7 @@ namespace BlackCore
             {
                 const QString resolvedTelephony = CAircraftMatcher::reverseLookupTelephonyDesignator(telephony);
                 airlineIcao.setTelephonyDesignator(resolvedTelephony);
-                CMatchingUtils::addLogDetailsToList(log, callsign, QString("Setting resolved telephoy designator '%1' from '%2'").arg(resolvedTelephony, telephony), getLogCategories());
+                CMatchingUtils::addLogDetailsToList(log, callsign, QString("Setting resolved telephony designator '%1' from '%2'").arg(resolvedTelephony, telephony), getLogCategories());
             }
         }
 
diff --git a/src/blackcore/airspacemonitor.h b/src/blackcore/airspacemonitor.h
index a524d87d7..cca6858c7 100644
--- a/src/blackcore/airspacemonitor.h
+++ b/src/blackcore/airspacemonitor.h
@@ -104,14 +104,19 @@ namespace BlackCore
         virtual bool updateAircraftRendered(const BlackMisc::Aviation::CCallsign &callsign, bool rendered) override;
         virtual bool updateAircraftGroundElevation(const BlackMisc::Aviation::CCallsign &callsign, const BlackMisc::Geo::CElevationPlane &elevation) override;
         virtual void updateMarkAllAsNotRendered() override;
-        virtual void enableReverseLookupMessages(bool enabled) override;
-        virtual bool isReverseLookupMessagesEnabled() const override;
-        virtual BlackMisc::CStatusMessageList getReverseLookupMessages(const BlackMisc::Aviation::CCallsign &callsign) const override;
         virtual BlackMisc::CStatusMessageList getAircraftPartsHistory(const BlackMisc::Aviation::CCallsign &callsign) const override;
         virtual bool isAircraftPartsHistoryEnabled() const override;
         virtual void enableAircraftPartsHistory(bool enabled) override;
         //! @}
 
+        //! \ingroup remoteaircraftprovider
+        //! \ingroup reverselookup
+        //! @{
+        virtual void enableReverseLookupMessages(bool enabled) override;
+        virtual bool isReverseLookupMessagesEnabled() const override;
+        virtual BlackMisc::CStatusMessageList getReverseLookupMessages(const BlackMisc::Aviation::CCallsign &callsign) const override;
+        //! @}
+
         //! Returns the list of users we know about
         BlackMisc::Network::CUserList getUsers() const;
 
@@ -289,6 +294,9 @@ namespace BlackCore
         //! Connected with network?
         bool isConnected() const;
 
+        //! Get the currently connected server
+        const BlackMisc::Network::CServer getConnectedServer() const;
+
         //! Supports VATSIM data file
         bool supportsVatsimDataFile() const;
 
@@ -342,23 +350,23 @@ namespace BlackCore
 
         //! Send the information if aircraft and(!) client are available
         //! \note it can take some time to obtain all data for model matching, so function recursively calls itself if something is still missing (trial)
+        //! \sa reverseLookupModelWithFlightplanData
         void sendReadyForModelMatching(const BlackMisc::Aviation::CCallsign &callsign, int trial = 1);
 
         //! Reverse lookup messages
         //! \threadsafe
+        //! \ingroup reverselookup
+        //! @{
         void addReverseLookupMessages(const BlackMisc::Aviation::CCallsign &callsign, const BlackMisc::CStatusMessageList &messages);
-
-        //! Reverse lookup messages
-        //! \threadsafe
         void addReverseLookupMessage(const BlackMisc::Aviation::CCallsign &callsign, const BlackMisc::CStatusMessage &message);
-
-        //! Reverse lookup messages
-        //! \threadsafe
         void addReverseLookupMessage(
             const BlackMisc::Aviation::CCallsign &callsign, const QString &message,
             BlackMisc::CStatusMessage::StatusSeverity severity = BlackMisc::CStatusMessage::SeverityInfo);
+        //! @}
 
         //! Reverse lookup, if available flight plan data are considered
+        //! \remark this is where a model is created based on network data
+        //! \ingroup reverselookup
         BlackMisc::Simulation::CAircraftModel reverseLookupModelWithFlightplanData(
             const BlackMisc::Aviation::CCallsign &callsign, const QString &aircraftIcao,
             const QString &airlineIcao, const QString &livery, const QString &modelString,
diff --git a/src/blackcore/context/contextsimulatorimpl.cpp b/src/blackcore/context/contextsimulatorimpl.cpp
index 4fc2d397a..42457e185 100644
--- a/src/blackcore/context/contextsimulatorimpl.cpp
+++ b/src/blackcore/context/contextsimulatorimpl.cpp
@@ -415,6 +415,9 @@ namespace BlackCore
             BLACK_VERIFY_X(!callsign.isEmpty(), Q_FUNC_INFO, "Remote aircraft with empty callsign");
             if (callsign.isEmpty()) { return; }
 
+            // here we find the best simulator model for a resolved model
+            // in the first step we already tried to find accurate ICAO codes etc.
+            // coming from CAirspaceMonitor::sendReadyForModelMatching
             CStatusMessageList matchingMessages;
             CStatusMessageList *pMatchingMessages = m_enableMatchingMessages ? &matchingMessages : nullptr;
             const CAircraftModel aircraftModel = m_aircraftMatcher.getClosestMatch(remoteAircraft, pMatchingMessages);
@@ -423,8 +426,8 @@ namespace BlackCore
             const CSimulatedAircraft aircraftAfterModelApplied = getAircraftInRangeForCallsign(remoteAircraft.getCallsign());
             m_simulatorPlugin.second->logicallyAddRemoteAircraft(aircraftAfterModelApplied);
             CMatchingUtils::addLogDetailsToList(pMatchingMessages, callsign, QString("Logically added remote aircraft: %1").arg(aircraftAfterModelApplied.toQString()));
-            addMatchingMessages(callsign, matchingMessages);
-            emit modelMatchingCompleted(remoteAircraft);
+            this->addMatchingMessages(callsign, matchingMessages);
+            emit this->modelMatchingCompleted(remoteAircraft);
         }
 
         void CContextSimulator::xCtxRemovedRemoteAircraft(const CCallsign &callsign)
diff --git a/src/blackcore/db/icaodatareader.h b/src/blackcore/db/icaodatareader.h
index 321aa17f7..1233e2020 100644
--- a/src/blackcore/db/icaodatareader.h
+++ b/src/blackcore/db/icaodatareader.h
@@ -15,9 +15,7 @@
 #include "blackcore/blackcoreexport.h"
 #include "blackcore/db/databasereader.h"
 #include "blackcore/data/dbcaches.h"
-#include "blackmisc/aviation/aircrafticaocode.h"
 #include "blackmisc/aviation/aircrafticaocodelist.h"
-#include "blackmisc/aviation/airlineicaocode.h"
 #include "blackmisc/aviation/airlineicaocodelist.h"
 #include "blackmisc/network/entityflags.h"
 #include "blackmisc/network/url.h"
diff --git a/src/blackcore/db/modeldatareader.cpp b/src/blackcore/db/modeldatareader.cpp
index b3eed5ccf..0334b76d3 100644
--- a/src/blackcore/db/modeldatareader.cpp
+++ b/src/blackcore/db/modeldatareader.cpp
@@ -101,21 +101,21 @@ namespace BlackCore
         CAircraftModel CModelDataReader::getModelForModelString(const QString &modelString) const
         {
             if (modelString.isEmpty()) { return CAircraftModel(); }
-            const CAircraftModelList models(getModels());
+            const CAircraftModelList models(this->getModels());
             return models.findFirstByModelStringOrDefault(modelString);
         }
 
         CAircraftModel CModelDataReader::getModelForDbKey(int dbKey) const
         {
             if (dbKey < 0) { return CAircraftModel(); }
-            const CAircraftModelList models(getModels());
+            const CAircraftModelList models(this->getModels());
             return models.findByKey(dbKey);
         }
 
         CAircraftModelList CModelDataReader::getModelsForAircraftDesignatorAndLiveryCombinedCode(const QString &aircraftDesignator, const QString &combinedCode)
         {
             if (aircraftDesignator.isEmpty()) { return CAircraftModelList(); }
-            const CAircraftModelList models(getModels());
+            const CAircraftModelList models(this->getModels());
             return models.findByAircraftDesignatorAndLiveryCombinedCode(aircraftDesignator, combinedCode);
         }
 
diff --git a/src/blackgui/components/modelmatchercomponent.cpp b/src/blackgui/components/modelmatchercomponent.cpp
index c2f153651..7933f551e 100644
--- a/src/blackgui/components/modelmatchercomponent.cpp
+++ b/src/blackgui/components/modelmatchercomponent.cpp
@@ -83,7 +83,7 @@ namespace BlackGui
         void CModelMatcherComponent::tabIndexChanged(int index)
         {
             if (index < 0) { return; }
-            QTabWidget *tw = CGuiUtility::parentTabWidget(this);
+            const QTabWidget *tw = CGuiUtility::parentTabWidget(this);
             Q_ASSERT_X(tw, Q_FUNC_INFO, "Cannot find parent tab widget");
             const QWidget *tabWidget = tw->currentWidget();
             const QWidget *myselfTabWidget = this->parentWidget();
@@ -140,8 +140,7 @@ namespace BlackGui
         {
             if (number > 0 && entity.testFlag(CEntityFlags::ModelEntity) && state == CEntityFlags::ReadFinished)
             {
-                QStringList modelStrings(sGui->getWebDataServices()->getModelStrings());
-                modelStrings.sort();
+                const QStringList modelStrings(sGui->getWebDataServices()->getModelStrings(true));
                 ui->le_ModelString->setCompleter(new QCompleter(modelStrings, this));
             }
         }
diff --git a/src/blackgui/components/modelmatcherlogcomponent.ui b/src/blackgui/components/modelmatcherlogcomponent.ui
index 2bfa25af9..fc2dec85c 100644
--- a/src/blackgui/components/modelmatcherlogcomponent.ui
+++ b/src/blackgui/components/modelmatcherlogcomponent.ui
@@ -66,6 +66,9 @@
       </item>
       <item row="2" column="0">
        <widget class="QLabel" name="lbl_Enable">
+        <property name="toolTip">
+         <string>Enables / disables future message logging</string>
+        </property>
         <property name="text">
          <string>Enable:</string>
         </property>
diff --git a/src/blackmisc/aviation/aircrafticaocode.cpp b/src/blackmisc/aviation/aircrafticaocode.cpp
index e3ef15b43..1d5dec8be 100644
--- a/src/blackmisc/aviation/aircrafticaocode.cpp
+++ b/src/blackmisc/aviation/aircrafticaocode.cpp
@@ -72,14 +72,9 @@ namespace BlackMisc
 
         QString CAircraftIcaoCode::getDesignatorDbKey() const
         {
-            if (this->isLoadedFromDb())
-            {
-                return this->getDesignator() + " " + this->getDbKeyAsStringInParentheses();
-            }
-            else
-            {
-                return this->getDesignator();
-            }
+            return (this->isLoadedFromDb()) ?
+                   this->getDesignator() % QStringLiteral(" ") % this->getDbKeyAsStringInParentheses() :
+                   this->getDesignator();
         }
 
         QString CAircraftIcaoCode::convertToQString(bool i18n) const
diff --git a/src/blackmisc/aviation/aircrafticaocode.h b/src/blackmisc/aviation/aircrafticaocode.h
index 8732e9b63..ef75a0ae0 100644
--- a/src/blackmisc/aviation/aircrafticaocode.h
+++ b/src/blackmisc/aviation/aircrafticaocode.h
@@ -80,8 +80,11 @@ namespace BlackMisc
             //! Designator and DB key
             QString getDesignatorDbKey() const;
 
+            //! Designator + Manufacturer
+            QString getDesignatorManufacturer() const;
+
             //! Set ICAO designator, e.g. "B737"
-            void setDesignator(const QString &icaoDesignator) { this->m_designator = icaoDesignator.trimmed().toUpper(); }
+            void setDesignator(const QString &icaoDesignator) { m_designator = icaoDesignator.trimmed().toUpper(); }
 
             //! Aircraft designator?
             bool hasDesignator() const;
@@ -99,10 +102,10 @@ namespace BlackMisc
             const QString &getIataCode() const { return m_iataCode; }
 
             //! Set IATA code
-            void setIataCode(const QString &iata) { this->m_iataCode = iata.toUpper().trimmed(); }
+            void setIataCode(const QString &iata) { m_iataCode = iata.toUpper().trimmed(); }
 
             //! Has IATA code?
-            bool hasIataCode() const { return !this->m_iataCode.isEmpty(); }
+            bool hasIataCode() const { return !m_iataCode.isEmpty(); }
 
             //! IATA code same as designator?
             bool isIataSameAsDesignator() const;
@@ -111,16 +114,16 @@ namespace BlackMisc
             const QString &getFamily() const { return m_family; }
 
             //! Set family
-            void setFamily(const QString &family) { this->m_family = family.toUpper().trimmed(); }
+            void setFamily(const QString &family) { m_family = family.toUpper().trimmed(); }
 
             //! Has family?
-            bool hasFamily() const { return !this->m_family.isEmpty(); }
+            bool hasFamily() const { return !m_family.isEmpty(); }
 
             //! Family same as designator?
             bool isFamilySameAsDesignator() const;
 
             //! Get type, e.g. "L2J"
-            const QString &getCombinedType() const { return this->m_combinedType; }
+            const QString &getCombinedType() const { return m_combinedType; }
 
             //! Combined type available?
             bool hasValidCombinedType() const;
@@ -138,7 +141,7 @@ namespace BlackMisc
             QString getAircraftType() const;
 
             //! Set type
-            void setCombinedType(const QString &type) { this->m_combinedType = type.trimmed().toUpper(); }
+            void setCombinedType(const QString &type) { m_combinedType = type.trimmed().toUpper(); }
 
             //! Get IACO model description, e.g. "A-330-200"
             const QString &getModelDescription() const { return m_modelDescription; }
@@ -159,9 +162,6 @@ namespace BlackMisc
             //! \remark * can be used as wildcard, e.g. L*J, L**
             bool matchesCombinedType(const QString &combinedType) const;
 
-            //! Designator + Manufacturer
-            QString getDesignatorManufacturer() const;
-
             //! Set the model description (ICAO description)
             void setModelDescription(const QString &modelDescription) { m_modelDescription = modelDescription.trimmed(); }
 
@@ -172,13 +172,13 @@ namespace BlackMisc
             void setModelSwiftDescription(const QString &modelDescription) { m_modelSwiftDescription = modelDescription.trimmed(); }
 
             //! Has model description?
-            bool hasModelDescription() const { return !this->m_modelDescription.isEmpty(); }
+            bool hasModelDescription() const { return !m_modelDescription.isEmpty(); }
 
             //! Has IATA model description?
-            bool hasModelIataDescription() const { return !this->m_modelIataDescription.isEmpty(); }
+            bool hasModelIataDescription() const { return !m_modelIataDescription.isEmpty(); }
 
             //! Has swift model description?
-            bool hasModelSwiftDescription() const { return !this->m_modelSwiftDescription.isEmpty(); }
+            bool hasModelSwiftDescription() const { return !m_modelSwiftDescription.isEmpty(); }
 
             //! Get manufacturer, e.g. "Airbus"
             const QString &getManufacturer() const { return m_manufacturer; }
diff --git a/src/blackmisc/aviation/airlineicaocode.cpp b/src/blackmisc/aviation/airlineicaocode.cpp
index 317dcddfc..d1be1be7e 100644
--- a/src/blackmisc/aviation/airlineicaocode.cpp
+++ b/src/blackmisc/aviation/airlineicaocode.cpp
@@ -411,23 +411,23 @@ namespace BlackMisc
                 return CAirlineIcaoCode();
             }
 
-            QString designator(json.value(prefix % QLatin1String("designator")).toString());
+            QString designator(json.value(prefix % QStringLiteral("designator")).toString());
             if (!CAirlineIcaoCode::isValidAirlineDesignator(designator))
             {
                 designator = CAirlineIcaoCode::normalizeDesignator(designator);
             }
 
-            const QString iata(json.value(prefix % QLatin1String("iata")).toString());
-            const QString telephony(json.value(prefix % QLatin1String("callsign")).toString());
-            const QString name(json.value(prefix % QLatin1String("name")).toString());
-            const QString countryIso(json.value(prefix % QLatin1String("country")).toString());
-            const QString countryName(json.value(prefix % QLatin1String("countryname")).toString());
-            const QString groupName(json.value(prefix % QLatin1String("groupname")).toString());
-            const QString groupDesignator(json.value(prefix % QLatin1String("groupdesignator")).toString());
-            const int groupId(json.value(prefix % QLatin1String("groupid")).toInt(-1));
-            const bool va = CDatastoreUtility::dbBoolStringToBool(json.value(prefix % QLatin1String("va")).toString());
-            const bool operating = CDatastoreUtility::dbBoolStringToBool(json.value(prefix % QLatin1String("operating")).toString());
-            const bool military = CDatastoreUtility::dbBoolStringToBool(json.value(prefix % QLatin1String("military")).toString());
+            const QString iata(json.value(prefix % QStringLiteral("iata")).toString());
+            const QString telephony(json.value(prefix % QStringLiteral("callsign")).toString());
+            const QString name(json.value(prefix % QStringLiteral("name")).toString());
+            const QString countryIso(json.value(prefix % QStringLiteral("country")).toString());
+            const QString countryName(json.value(prefix % QStringLiteral("countryname")).toString());
+            const QString groupName(json.value(prefix % QStringLiteral("groupname")).toString());
+            const QString groupDesignator(json.value(prefix % QStringLiteral("groupdesignator")).toString());
+            const int groupId(json.value(prefix % QStringLiteral("groupid")).toInt(-1));
+            const bool va = CDatastoreUtility::dbBoolStringToBool(json.value(prefix % QStringLiteral("va")).toString());
+            const bool operating = CDatastoreUtility::dbBoolStringToBool(json.value(prefix % QStringLiteral("operating")).toString());
+            const bool military = CDatastoreUtility::dbBoolStringToBool(json.value(prefix % QStringLiteral("military")).toString());
 
             CAirlineIcaoCode code(
                 designator, name,
diff --git a/src/blackmisc/db/datastore.cpp b/src/blackmisc/db/datastore.cpp
index 9bcefd5bf..66dafc59f 100644
--- a/src/blackmisc/db/datastore.cpp
+++ b/src/blackmisc/db/datastore.cpp
@@ -21,14 +21,14 @@ namespace BlackMisc
     {
         QString IDatastoreObjectWithIntegerKey::getDbKeyAsString() const
         {
-            if (this->m_dbKey < 0) { return ""; }
-            return QString::number(this->m_dbKey);
+            if (m_dbKey < 0) { return ""; }
+            return QString::number(m_dbKey);
         }
 
         QString IDatastoreObjectWithIntegerKey::getDbKeyAsStringInParentheses(const QString &prefix) const
         {
-            if (this->m_dbKey < 0) { return ""; }
-            return prefix + "(" + QString::number(this->m_dbKey) + ")";
+            if (m_dbKey < 0) { return ""; }
+            return prefix + "(" + QString::number(m_dbKey) + ")";
         }
 
         void IDatastoreObjectWithIntegerKey::setDbKey(const QString &key)
@@ -36,7 +36,7 @@ namespace BlackMisc
             bool ok;
             int k = key.toInt(&ok);
             if (!ok) { k = -1; }
-            this->m_dbKey = k;
+            m_dbKey = k;
         }
 
         bool IDatastoreObjectWithIntegerKey::isLoadedFromDb() const
@@ -68,7 +68,7 @@ namespace BlackMisc
 
         QJsonValue IDatastoreObjectWithIntegerKey::getDbKeyAsJsonValue() const
         {
-            if (this->hasValidDbKey()) { return QJsonValue(this->m_dbKey); }
+            if (this->hasValidDbKey()) { return QJsonValue(m_dbKey); }
             return QJsonValue();
         }
 
@@ -96,7 +96,7 @@ namespace BlackMisc
             const ColumnIndex i = index.frontCasted<ColumnIndex>();
             switch (i)
             {
-            case IndexDbIntegerKey: return CVariant::from(this->m_dbKey);
+            case IndexDbIntegerKey: return CVariant::from(m_dbKey);
             case IndexDbKeyAsString: return CVariant::from(this->getDbKeyAsString());
             case IndexIsLoadedFromDb: return CVariant::from(this->hasValidDbKey());
             case IndexDatabaseIcon: return CVariant::from(this->toDatabaseIcon());
@@ -112,10 +112,10 @@ namespace BlackMisc
             switch (i)
             {
             case IndexDbIntegerKey:
-                this->m_dbKey = variant.toInt();
+                m_dbKey = variant.toInt();
                 break;
             case IndexDbKeyAsString:
-                this->m_dbKey = stringToDbKey(variant.toQString());
+                m_dbKey = stringToDbKey(variant.toQString());
             default:
                 break;
             }
@@ -128,7 +128,7 @@ namespace BlackMisc
             switch (i)
             {
             case IndexDbKeyAsString: // fall thru
-            case IndexDbIntegerKey: return Compare::compare(this->m_dbKey, compareValue.getDbKey());
+            case IndexDbIntegerKey: return Compare::compare(m_dbKey, compareValue.getDbKey());
             case IndexDatabaseIcon: return Compare::compare(this->hasValidDbKey(), compareValue.hasValidDbKey());
             default: break;
             }
@@ -145,14 +145,14 @@ namespace BlackMisc
 
         QJsonValue IDatastoreObjectWithStringKey::getDbKeyAsJsonValue() const
         {
-            if (this->hasValidDbKey()) { return QJsonValue(this->m_dbKey); }
+            if (this->hasValidDbKey()) { return QJsonValue(m_dbKey); }
             static const QJsonValue null;
             return null;
         }
 
         QString IDatastoreObjectWithStringKey::getDbKeyAsStringInParentheses(const QString &prefix) const
         {
-            if (this->m_dbKey.isEmpty()) { return ""; }
+            if (m_dbKey.isEmpty()) { return ""; }
             return prefix + "(" + m_dbKey + ")";
         }
 
@@ -190,9 +190,9 @@ namespace BlackMisc
             switch (i)
             {
             case IndexDbKeyAsString: // fall thru
-            case IndexDbStringKey: return CVariant::from(this->m_dbKey);
+            case IndexDbStringKey: return CVariant::from(m_dbKey);
             case IndexDatabaseIcon: return CVariant::from(this->toDatabaseIcon());
-            case IndexIsLoadedFromDb: return CVariant::from(this->m_loadedFromDb);
+            case IndexIsLoadedFromDb: return CVariant::from(m_loadedFromDb);
             default:
                 break;
             }
@@ -207,10 +207,10 @@ namespace BlackMisc
             {
             case IndexDbStringKey:
             case IndexDbKeyAsString:
-                this->m_dbKey = variant.value<QString>();
+                m_dbKey = variant.value<QString>();
                 break;
             case IndexIsLoadedFromDb:
-                this->m_loadedFromDb = variant.toBool();
+                m_loadedFromDb = variant.toBool();
                 break;
             default:
                 break;
@@ -224,7 +224,7 @@ namespace BlackMisc
             switch (i)
             {
             case IndexDbKeyAsString: // fall thru
-            case IndexDbStringKey:  return this->m_dbKey.compare(compareValue.getDbKey());
+            case IndexDbStringKey:  return m_dbKey.compare(compareValue.getDbKey());
             case IndexDatabaseIcon: return Compare::compare(this->hasValidDbKey(), compareValue.hasValidDbKey());
             default:
                 break;
diff --git a/src/blackmisc/network/ecosystem.h b/src/blackmisc/network/ecosystem.h
index 7fdb047e9..671ea1cef 100644
--- a/src/blackmisc/network/ecosystem.h
+++ b/src/blackmisc/network/ecosystem.h
@@ -35,7 +35,7 @@ namespace BlackMisc
                 IndexSystemString
             };
 
-            //! Known system
+            //! Known systems
             enum System
             {
                 Unspecified, //!< unspecified
diff --git a/src/blackmisc/simulation/aircraftmodellist.cpp b/src/blackmisc/simulation/aircraftmodellist.cpp
index a8f04be4f..9d2e629f7 100644
--- a/src/blackmisc/simulation/aircraftmodellist.cpp
+++ b/src/blackmisc/simulation/aircraftmodellist.cpp
@@ -452,17 +452,17 @@ namespace BlackMisc
 
         int CAircraftModelList::keepModelsWithString(const QStringList &modelStrings, Qt::CaseSensitivity sensitivity)
         {
-            int cs = this->size();
+            const int cs = this->size();
             (*this) = (findByModelStrings(modelStrings, sensitivity));
-            int d = cs - this->size();
+            const int d = cs - this->size();
             return d;
         }
 
         int CAircraftModelList::removeModelsWithString(const QStringList &modelStrings, Qt::CaseSensitivity sensitivity)
         {
-            int cs = this->size();
+            const int cs = this->size();
             (*this) = (this->findByNotInModelStrings(modelStrings, sensitivity));
-            int d = cs - this->size();
+            const int d = cs - this->size();
             return d;
         }