diff --git a/source/dnode/mnode/impl/src/mndUser.c b/source/dnode/mnode/impl/src/mndUser.c
index ff5bb90c81..b7c2a24ba6 100644
--- a/source/dnode/mnode/impl/src/mndUser.c
+++ b/source/dnode/mnode/impl/src/mndUser.c
@@ -1121,6 +1121,8 @@ static int32_t mndCreateUser(SMnode *pMnode, char *acct, SCreateUserReq *pCreate
     goto _OVER;
   }
   ipWhiteMgtUpdate(userObj.user, userObj.pIpWhiteList);
+  taosMemoryFree(userObj.pIpWhiteList);
+
   mndTransDrop(pTrans);
   return 0;
 _OVER: