diff --git a/cocos/renderer/CCMaterial.cpp b/cocos/renderer/CCMaterial.cpp
index dfd60b66e4..5b5d1aa8dd 100644
--- a/cocos/renderer/CCMaterial.cpp
+++ b/cocos/renderer/CCMaterial.cpp
@@ -443,9 +443,6 @@ Material* Material::clone() const
         {
             auto t = technique->clone();
             t->_parent = material;
-            for (ssize_t i = 0; i < t->getPassCount(); i++) {
-                t->getPassByIndex(i)->_parent = t;
-            }
             material->_techniques.pushBack(t);
         }
 
diff --git a/cocos/renderer/CCTechnique.cpp b/cocos/renderer/CCTechnique.cpp
index 59c244a8f5..286780a471 100644
--- a/cocos/renderer/CCTechnique.cpp
+++ b/cocos/renderer/CCTechnique.cpp
@@ -86,6 +86,7 @@ Technique* Technique::clone() const
         for (const auto pass: _passes)
         {
             auto p = pass->clone();
+            p->_parent = technique;
             technique->_passes.pushBack(p);
         }