diff --git a/include/osgViewer/View b/include/osgViewer/View
index 783522ab4..54197d062 100644
--- a/include/osgViewer/View
+++ b/include/osgViewer/View
@@ -306,7 +306,7 @@ class OSGVIEWER_EXPORT View : public osg::View, public osgGA::GUIActionAdapter
         virtual void requestWarpPointer(float x,float y);
 
         /** Return true if there are pending updates to the scene graph that require an update. */
-        bool requiresUpdateSceneGraph() const;
+        virtual bool requiresUpdateSceneGraph() const;
 
     public: