diff --git a/cocos/2d/CCActionTiledGrid.cpp b/cocos/2d/CCActionTiledGrid.cpp
index a96bfa7e91..ce62c9fd27 100644
--- a/cocos/2d/CCActionTiledGrid.cpp
+++ b/cocos/2d/CCActionTiledGrid.cpp
@@ -572,11 +572,6 @@ FadeOutDownTiles* FadeOutDownTiles::clone() const
 float FadeOutDownTiles::testFunc(const Size& pos, float time)
 {
     Vec2 n = Vec2((float)_gridSize.width, (float)_gridSize.height) * (1.0f - time);
-    //if (pos.height == 0)
-    //{
-    //    return 1.0f;
-    //}
-
     return powf(n.y / (pos.height > 0.0f ? pos.height : 0.1f), 6);
 }