--- a/Plugins/PluginWizardQRegularExpression.py	Fri Nov 01 15:48:48 2013 +0100
+++ b/Plugins/PluginWizardQRegularExpression.py	Sun Nov 03 15:58:22 2013 +0100
@@ -120,7 +120,7 @@
         """
         editor = e5App().getObject("ViewManager").activeWindow()
         
-        if editor == None:
+        if editor is None:
             E5MessageBox.critical(
                 self.__ui,
                 self.trUtf8('No current editor'),