diff --git a/applet.cpp b/applet.cpp
index 1bcf5139f..74738e924 100644
--- a/applet.cpp
+++ b/applet.cpp
@@ -2350,3 +2350,4 @@ void AppletOverlayWidget::paint(QPainter *painter,
 } // Plasma namespace
 
 #include "applet.moc"
+#include "private/applet_p.moc"
diff --git a/private/applet_p.h b/private/applet_p.h
index fb4c186b8..578e3f898 100644
--- a/private/applet_p.h
+++ b/private/applet_p.h
@@ -41,6 +41,8 @@ class BusyWidget;
 
 class AppletOverlayWidget : public QGraphicsWidget
 {
+    Q_OBJECT
+
 public:
     AppletOverlayWidget(QGraphicsWidget *parent);
     void destroy();