diff --git a/source/dnode/mgmt/node_mgmt/src/dmTransport.c b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
index 37c548c6ba..df54f8abba 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmTransport.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
@@ -290,7 +290,7 @@ int32_t dmInitClient(SDnode *pDnode) {
   rpcInit.cfp = (RpcCfp)dmProcessRpcMsg;
   rpcInit.sessions = 1024;
   rpcInit.connType = TAOS_CONN_CLIENT;
-  rpcInit.user = "root";
+  rpcInit.user = TSDB_DEFAULT_USER;
   rpcInit.idleTime = tsShellActivityTimer * 1000;
   rpcInit.parent = pDnode;
   rpcInit.rfp = rpcRfp;