diff --git a/cocos/3d/CCSprite3D.h b/cocos/3d/CCSprite3D.h
index c9f729d70f..48d8452c5a 100644
--- a/cocos/3d/CCSprite3D.h
+++ b/cocos/3d/CCSprite3D.h
@@ -200,7 +200,7 @@ public:
     */
     void setForce2DQueue(bool force2D);
 
-    Vector<Mesh*>& getMeshes() { return _meshes; }
+    const Vector<Mesh*>& getMeshes() const { return _meshes; }
     const AABB& getAABB(bool world) const;
 
 CC_CONSTRUCTOR_ACCESS:
diff --git a/cocos/renderer/CCTextureCache.cpp b/cocos/renderer/CCTextureCache.cpp
index 1430ae5891..89c70188ba 100644
--- a/cocos/renderer/CCTextureCache.cpp
+++ b/cocos/renderer/CCTextureCache.cpp
@@ -600,7 +600,7 @@ std::string TextureCache::getCachedTextureInfo() const
     return buffer;
 }
 
-void TextureCache::renameTextureWithKey(std::string srcName, std::string dstName)
+void TextureCache::renameTextureWithKey(const std::string srcName, const std::string dstName)
 {
     std::string key = srcName;
     auto it = _textures.find(key);
diff --git a/cocos/renderer/CCTextureCache.h b/cocos/renderer/CCTextureCache.h
index 5b769491ba..730f3ea3fa 100644
--- a/cocos/renderer/CCTextureCache.h
+++ b/cocos/renderer/CCTextureCache.h
@@ -207,7 +207,7 @@ public:
     void setDirty(bool dirty) { _dirty = dirty; }
     bool isDirty() const { return _dirty; }
 
-    void renameTextureWithKey(std::string srcName, std::string dstName);
+    void renameTextureWithKey(const std::string srcName, const std::string dstName);
 
 
 private: