diff --git a/src/insets/RenderBase.h b/src/insets/RenderBase.h
index e42035d87f..fab0d7abc2 100644
--- a/src/insets/RenderBase.h
+++ b/src/insets/RenderBase.h
@@ -52,12 +52,12 @@ public:
 	virtual RenderMonitoredPreview * asMonitoredPreview() { return 0; }
 
 protected:
-	RenderBase() {}
+	RenderBase() : state_(false) {}
 	RenderBase(RenderBase const &) {}
 	RenderBase & operator=(RenderBase const &) { return *this; }
 
 	/// render state. currently, render_button uses this to store mouse_hover_
-	int state_;
+	bool state_;
 	/// Cached
 	mutable Dimension dim_;
 };
diff --git a/status.16x b/status.16x
index d8f1ca8250..5ba9743279 100644
--- a/status.16x
+++ b/status.16x
@@ -223,6 +223,8 @@ What's new
 
 - Fix selection of math insets on some archs.
 
+- Fix of painter glitches caused by unitialized variables (bug 6077).
+
 
 * DOCUMENTATION AND LOCALIZATION