diff --git a/kmreadermainwin.h b/kmreadermainwin.h
index 8611a1597..ffade966d 100644
--- a/kmreadermainwin.h
+++ b/kmreadermainwin.h
@@ -61,7 +61,7 @@ private:
 
   KMReaderWin *mReaderWin;
   KMMessage *mMsg;
-  QTextCodec *mCodec;
+  const QTextCodec *mCodec;
   KURL mUrl;
   QMap<int,KMFolder*> mMenuToFolder;
 };