diff --git a/cocos2dx/support/user_default/CCUserDefault.cpp b/cocos2dx/support/user_default/CCUserDefault.cpp
index a38be0ad0f..44e4af6634 100644
--- a/cocos2dx/support/user_default/CCUserDefault.cpp
+++ b/cocos2dx/support/user_default/CCUserDefault.cpp
@@ -66,6 +66,7 @@ static tinyxml2::XMLElement* getXMLNodeForKey(const char* pKey, tinyxml2::XMLEle
 			break;
 		}
 		xmlDoc->Parse(pXmlBuffer);
+        delete[] pXmlBuffer;
 		// get root node
 		*rootNode = xmlDoc->RootElement();
 		if (NULL == *rootNode)
diff --git a/cocos2dx/support/user_default/CCUserDefault.mm b/cocos2dx/support/user_default/CCUserDefault.mm
index 8936a65e07..285c729879 100644
--- a/cocos2dx/support/user_default/CCUserDefault.mm
+++ b/cocos2dx/support/user_default/CCUserDefault.mm
@@ -81,6 +81,7 @@ static tinyxml2::XMLElement* getXMLNodeForKey(const char* pKey, tinyxml2::XMLDoc
 			break;
 		}
 		xmlDoc->Parse(pXmlBuffer);
+        delete[] pXmlBuffer;
 		// get root node
 		rootNode = xmlDoc->RootElement();
 		if (NULL == rootNode)
diff --git a/cocos2dx/support/user_default/CCUserDefaultAndroid.cpp b/cocos2dx/support/user_default/CCUserDefaultAndroid.cpp
index b94d474609..220adf0deb 100644
--- a/cocos2dx/support/user_default/CCUserDefaultAndroid.cpp
+++ b/cocos2dx/support/user_default/CCUserDefaultAndroid.cpp
@@ -82,6 +82,7 @@ static tinyxml2::XMLElement* getXMLNodeForKey(const char* pKey, tinyxml2::XMLDoc
             break;
         }
         xmlDoc->Parse(pXmlBuffer);
+		delete[] pXmlBuffer;
         // get root node
         rootNode = xmlDoc->RootElement();
         if (NULL == rootNode)