diff --git a/src/blackgui/components/cockpitcomponent.cpp b/src/blackgui/components/cockpitcomponent.cpp
index 6dfe69eec..6fecc2245 100644
--- a/src/blackgui/components/cockpitcomponent.cpp
+++ b/src/blackgui/components/cockpitcomponent.cpp
@@ -21,7 +21,6 @@ namespace BlackGui
 {
     namespace Components
     {
-
         CCockpitComponent::CCockpitComponent(QWidget *parent) :
             QWidget(parent),
             CEnableForDockWidgetInfoArea(),
diff --git a/src/blackgui/components/settingssimulatorbasicscomponent.ui b/src/blackgui/components/settingssimulatorbasicscomponent.ui
index ca9419c1f..b4b3f711e 100644
--- a/src/blackgui/components/settingssimulatorbasicscomponent.ui
+++ b/src/blackgui/components/settingssimulatorbasicscomponent.ui
@@ -71,7 +71,7 @@
    <item row="0" column="0">
     <widget class="QLabel" name="lbl_SimulatorDirectory">
      <property name="text">
-      <string>Simulator directory;</string>
+      <string>Simulator directory:</string>
      </property>
     </widget>
    </item>
diff --git a/src/blackmisc/identifier.cpp b/src/blackmisc/identifier.cpp
index 1731c9788..09a5a3348 100644
--- a/src/blackmisc/identifier.cpp
+++ b/src/blackmisc/identifier.cpp
@@ -12,6 +12,7 @@
 #include <QCoreApplication>
 #include <QDBusConnection>
 #include <QHostInfo>
+#include <QStringBuilder>
 
 namespace BlackMisc
 {
@@ -76,11 +77,11 @@ namespace BlackMisc
     QString CIdentifier::convertToQString(bool i18n) const
     {
         Q_UNUSED(i18n);
-        QString s(m_name);
-        s.append(" ").append(m_machineIdBase64);
-        s.append(" ").append(m_machineName);
-        s.append(" ").append(QString::number(m_processId));
-        s.append(" ").append(m_processName);
+        const QString s = m_name %
+                          QLatin1Char(' ') % m_machineIdBase64 %
+                          QLatin1Char(' ') % m_machineName %
+                          QLatin1Char(' ') % QString::number(m_processId) %
+                          QLatin1Char(' ') % m_processName;
         return s;
     }
 
@@ -120,5 +121,4 @@ namespace BlackMisc
     {
         CValueObject::setPropertyByIndex(index, variant);
     }
-
 } // ns
diff --git a/src/blackmisc/simulation/data/modelcaches.h b/src/blackmisc/simulation/data/modelcaches.h
index 2430bc251..639f0d1c5 100644
--- a/src/blackmisc/simulation/data/modelcaches.h
+++ b/src/blackmisc/simulation/data/modelcaches.h
@@ -158,7 +158,7 @@ namespace BlackMisc
                 //! \threadsafe
                 virtual QDateTime getCacheTimestamp(const BlackMisc::Simulation::CSimulatorInfo &simulator) const = 0;
 
-                //! Initilaized caches for which simulator
+                //! Initialized caches for which simulator?
                 //! \threadsafe
                 BlackMisc::Simulation::CSimulatorInfo simulatorsWithInitializedCache() const;
 
diff --git a/src/blackmisc/simulation/fscommon/fscommonutil.cpp b/src/blackmisc/simulation/fscommon/fscommonutil.cpp
index 816bbc188..7808027cb 100644
--- a/src/blackmisc/simulation/fscommon/fscommonutil.cpp
+++ b/src/blackmisc/simulation/fscommon/fscommonutil.cpp
@@ -74,6 +74,7 @@ namespace BlackMisc
                 });
                 if (!CBuildConfig::isShippedVersion())
                 {
+                    // developer directories
                     someDefaultDirs.push_back("P:/FSX (MSI)");
                 }
                 return CFileUtils::findFirstExisting(someDefaultDirs);
diff --git a/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp b/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp
index 804759bd0..93522fdee 100644
--- a/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp
+++ b/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp
@@ -34,6 +34,7 @@
 #include <QMap>
 #include <QRegularExpression>
 #include <QTextStream>
+#include <QStringBuilder>
 #include <algorithm>
 #include <functional>
 
@@ -127,11 +128,10 @@ namespace BlackMisc
 
             QString CAircraftModelLoaderXPlane::CSLPlane::getModelName() const
             {
-                QString modelName = dirNames.join(' ');
-                modelName += " ";
-                modelName += objectName;
-                modelName += " ";
-                modelName += textureName;
+                const QString modelName =
+                    dirNames.join(' ') %
+                    QLatin1Char(' ') % objectName %
+                    QLatin1Char(' ') % textureName;
                 return modelName;
             }