diff --git a/spine-cocos2dx/src/spine/CCSkeletonAnimation.h b/spine-cocos2dx/src/spine/CCSkeletonAnimation.h
index 5f7682ae8..73a7a12ed 100644
--- a/spine-cocos2dx/src/spine/CCSkeletonAnimation.h
+++ b/spine-cocos2dx/src/spine/CCSkeletonAnimation.h
@@ -72,7 +72,7 @@ public:
 	void clearTracks ();
 	void clearTrack (int trackIndex = 0);
 
-	void onAnimationStateEvent (int trackIndex, spEventType type, spEvent* event, int loopCount);
+	virtual void onAnimationStateEvent (int trackIndex, spEventType type, spEvent* event, int loopCount);
 
 protected:
 	CCSkeletonAnimation ();