diff --git a/corona.h b/corona.h
index 8ae792b93..fe963dfad 100644
--- a/corona.h
+++ b/corona.h
@@ -377,7 +377,7 @@ public Q_SLOTS:
      * organizes them in a grid-like view, but subclasses can reimplement
      * this slot to provide their own layout.
      */
-    void layoutContainments();
+    virtual void layoutContainments();
 
 Q_SIGNALS:
     /**