diff --git a/src/scriptengines/qml/plasmoid/containmentinterface.h b/src/scriptengines/qml/plasmoid/containmentinterface.h
index f5a27dafc..80d43ec65 100644
--- a/src/scriptengines/qml/plasmoid/containmentinterface.h
+++ b/src/scriptengines/qml/plasmoid/containmentinterface.h
@@ -171,4 +171,6 @@ private:
     KActivities::Info *m_activityInfo;
 };
 
+QML_DECLARE_TYPEINFO(ContainmentInterface, QML_HAS_ATTACHED_PROPERTIES)
+
 #endif