diff --git a/popupapplet.h b/popupapplet.h
index f1343640a..2dbd01cd3 100644
--- a/popupapplet.h
+++ b/popupapplet.h
@@ -221,6 +221,7 @@ private:
 
     friend class Applet;
     friend class AppletPrivate;
+    friend class Extender;
     friend class PopupAppletPrivate;
     PopupAppletPrivate * const d;
 };