--- a/Helpviewer/History/HistoryMenu.py	Sun Jun 19 17:50:39 2011 +0200
+++ b/Helpviewer/History/HistoryMenu.py	Sun Jun 19 19:36:27 2011 +0200
@@ -38,7 +38,7 @@
         @param sourceModel reference to the source model (QAbstractItemModel)
         @param parent reference to the parent object (QObject)
         """
-        QAbstractProxyModel.__init__(self, parent)
+        super().__init__(parent)
         
         self.__treeModel = sourceModel