diff --git a/rtgui/rtwindow.cc b/rtgui/rtwindow.cc
index 00cb72a4e..34e671d2e 100644
--- a/rtgui/rtwindow.cc
+++ b/rtgui/rtwindow.cc
@@ -1,6 +1,7 @@
 /*
  *  This file is part of RawTherapee.
  *
+ *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>, Oliver Duis <www.oliverduis.de>
  *
  *  RawTherapee is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -23,6 +24,8 @@
 
 RTWindow::RTWindow () {
 
+    epanel=NULL;  // to prevent eventing errors
+
     cacheMgr->init ();
 
 #ifdef GLIBMM_EXCEPTIONS_ENABLED