diff --git a/src/blackgui/enableforframelesswindow.cpp b/src/blackgui/enableforframelesswindow.cpp
index 4f0127c2c..9398fa70c 100644
--- a/src/blackgui/enableforframelesswindow.cpp
+++ b/src/blackgui/enableforframelesswindow.cpp
@@ -109,6 +109,8 @@ namespace BlackGui
             return (Qt::Window | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
         case WindowNormal:
         default:
+            // tool window and minimized not supported on windows
+            // tool window always with close button on windows
             return (Qt::Tool | Qt::WindowStaysOnTopHint | Qt::WindowMinimizeButtonHint | Qt::WindowCloseButtonHint);
         }
     }
diff --git a/src/blackmisc/avcallsignlist.h b/src/blackmisc/avcallsignlist.h
index 63dd07ff9..b5f3d1c4d 100644
--- a/src/blackmisc/avcallsignlist.h
+++ b/src/blackmisc/avcallsignlist.h
@@ -21,9 +21,7 @@ namespace BlackMisc
 {
     namespace Aviation
     {
-        /*!
-         * Value object encapsulating a list of callsigns.
-         */
+        //! Value object for a list of callsigns.
         class CCallsignList : public CSequence<CCallsign>
         {
         public:
diff --git a/src/blackmisc/aviotransponder.h b/src/blackmisc/aviotransponder.h
index 253baad15..2f5c49177 100644
--- a/src/blackmisc/aviotransponder.h
+++ b/src/blackmisc/aviotransponder.h
@@ -49,12 +49,12 @@ namespace BlackMisc
             CTransponder() : CValueObjectStdTuple("transponder"), m_transponderCode(0), m_transponderMode(StateStandby) {}
 
             //! Constructor
-            CTransponder(const QString &name, qint32 transponderCode, TransponderMode transponderMode) :
+            CTransponder(const QString &name, int transponderCode, TransponderMode transponderMode) :
                 CValueObjectStdTuple(name), m_transponderCode(transponderCode), m_transponderMode(transponderMode)
             {  }
 
             //! Constructor with transponder mode as string
-            CTransponder(const QString &name, qint32 transponderCode, QString transponderMode) :
+            CTransponder(const QString &name, int transponderCode, QString transponderMode) :
                 CValueObjectStdTuple(name), m_transponderCode(transponderCode), m_transponderMode(StateStandby)
             {
                 this->setModeAsString(transponderMode);