diff --git a/src/blackmisc/simulation/interpolationlogger.cpp b/src/blackmisc/simulation/interpolationlogger.cpp
index 8a27e2261..558695771 100644
--- a/src/blackmisc/simulation/interpolationlogger.cpp
+++ b/src/blackmisc/simulation/interpolationlogger.cpp
@@ -240,8 +240,8 @@ namespace BlackMisc
         void CInterpolationLogger::clearLog()
         {
             QWriteLocker l(&m_lockLogs);
-            this->m_partsLogs.clear();
-            this->m_situationLogs.clear();
+            m_partsLogs.clear();
+            m_situationLogs.clear();
         }
 
         QString CInterpolationLogger::msSinceEpochToTime(qint64 ms)
diff --git a/src/blackmisc/simulation/interpolatormulti.cpp b/src/blackmisc/simulation/interpolatormulti.cpp
index 36b9c7f6e..a0e72610e 100644
--- a/src/blackmisc/simulation/interpolatormulti.cpp
+++ b/src/blackmisc/simulation/interpolatormulti.cpp
@@ -108,7 +108,7 @@ namespace BlackMisc
         bool CInterpolatorMulti::setMode(const QString &mode)
         {
             Mode m = modeFromString(mode);
-            if (m == ModeUnkown) { return false; }
+            if (m == ModeUnknown) { return false; }
             return setMode(m);
         }
 
@@ -126,7 +126,7 @@ namespace BlackMisc
         {
             if (mode.contains("spli"), Qt::CaseInsensitive) { return ModeSpline; }
             if (mode.contains("lin"), Qt::CaseInsensitive) { return ModeLinear; }
-            return ModeUnkown;
+            return ModeUnknown;
         }
 
         const QString &CInterpolatorMulti::modeToString(CInterpolatorMulti::Mode mode)
@@ -139,7 +139,7 @@ namespace BlackMisc
             {
             case ModeLinear: return l;
             case ModeSpline: return s;
-            case ModeUnkown:
+            case ModeUnknown:
             default: return u;
             }
         }
diff --git a/src/blackmisc/simulation/interpolatormulti.h b/src/blackmisc/simulation/interpolatormulti.h
index 8e2036326..137a037b4 100644
--- a/src/blackmisc/simulation/interpolatormulti.h
+++ b/src/blackmisc/simulation/interpolatormulti.h
@@ -58,7 +58,7 @@ namespace BlackMisc
             {
                 ModeSpline, //!< spline interpolation mode
                 ModeLinear, //!< linear interpolation mode
-                ModeUnkown
+                ModeUnknown
             };
 
             //! Set interpolation mode. Return true if mode was changed. Mode will not be changed in release build.
diff --git a/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp b/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp
index f451ad561..414466948 100644
--- a/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp
+++ b/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp
@@ -246,7 +246,7 @@ namespace BlackSimPlugin
 
         bool CSimulatorFsxCommon::setInterpolatorMode(CInterpolatorMulti::Mode mode, const CCallsign &callsign)
         {
-            if (mode == CInterpolatorMulti::ModeUnkown) { return false; }
+            if (mode == CInterpolatorMulti::ModeUnknown) { return false; }
             if (callsign.isEmpty())
             {
                 const int c = m_simConnectObjects.setInterpolatorModes(mode);