diff --git a/gui/bitmapLoader.py b/gui/bitmapLoader.py
index 78f876e99..c0b955d76 100644
--- a/gui/bitmapLoader.py
+++ b/gui/bitmapLoader.py
@@ -39,4 +39,7 @@ def getBitmap(name,location):
     if os.path.exists(path):
         return wx.Image(path).ConvertToBitmap()
     else:
-        return wx.NullBitmap
+        null = wx.NullBitmap
+        null.SetWidth(32)
+        null.SetHeight(32)
+        return null