diff --git a/src/qt/bitmap.cpp b/src/qt/bitmap.cpp
index b5edf069d7..a5bc256ac4 100644
--- a/src/qt/bitmap.cpp
+++ b/src/qt/bitmap.cpp
@@ -86,7 +86,7 @@ static QImage ConvertImage( const wxImage &image, wxMask** mask = nullptr  )
     QRgb colour;
 
     QImage qtMask;
-    QRgb maskedColour;
+    QRgb maskedColour wxDUMMY_INITIALIZE(0);
     if ( hasMask )
     {
         unsigned char r, g, b;
diff --git a/src/qt/font.cpp b/src/qt/font.cpp
index c36859132f..768a1955d1 100644
--- a/src/qt/font.cpp
+++ b/src/qt/font.cpp
@@ -522,7 +522,7 @@ void wxNativeFontInfo::SetPixelSize(const wxSize& size)
 
 void wxNativeFontInfo::SetStyle(wxFontStyle style)
 {
-    QFont::Style qtStyle;
+    QFont::Style qtStyle wxDUMMY_INITIALIZE(QFont::StyleNormal);
 
     switch ( style )
     {