diff --git a/server/gameserver/hero.h b/server/gameserver/hero.h
index e958ad7..0ff2d9c 100644
--- a/server/gameserver/hero.h
+++ b/server/gameserver/hero.h
@@ -32,7 +32,7 @@ public:
     virtual void Update(int delta_time) override;
     virtual void GetAabbBox(AabbCollider& aabb_box) override;
 
-    float GetSpeed();
+    virtual float GetSpeed() override;
 
 protected:
     void UpdateMove(int speed);