diff --git a/src/QGCMapPalette.h b/src/QGCMapPalette.h
index 25a1bd90f59514895df06004e4650094ab87e936..d14cbb4ab2c7591b12c9974dfb47e52092469b5d 100644
--- a/src/QGCMapPalette.h
+++ b/src/QGCMapPalette.h
@@ -64,7 +64,7 @@ signals:
     void lightColorsChanged(bool lightColors);
     
 private:
-    bool _lightColors;
+    bool _lightColors = false;
 
     static const int _cColorGroups = 2;