diff --git a/include/osgGA/GUIEventAdapter b/include/osgGA/GUIEventAdapter
index f3caf6cce..a1f6bfb9f 100644
--- a/include/osgGA/GUIEventAdapter
+++ b/include/osgGA/GUIEventAdapter
@@ -33,6 +33,7 @@ public:
         enum EventType {
                 PUSH,
                 RELEASE,
+                DOUBLECLICK,
                 DRAG,
                 MOVE,
                 KEYDOWN,