diff --git a/source/libs/sync/src/syncRequestVote.c b/source/libs/sync/src/syncRequestVote.c
index 8b8b2580b1..738e558033 100644
--- a/source/libs/sync/src/syncRequestVote.c
+++ b/source/libs/sync/src/syncRequestVote.c
@@ -95,7 +95,7 @@ int32_t syncNodeOnRequestVote(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   if (!syncNodeInRaftGroup(ths, &pMsg->srcId)) {
     syncLogRecvRequestVote(ths, pMsg, -1, "not in my config");
 
-    TAOS_RETURN(TSDB_CODE_FAILED);
+    TAOS_RETURN(TSDB_CODE_SYN_MISMATCHED_SIGNATURE);
   }
 
   bool logOK = syncNodeOnRequestVoteLogOK(ths, pMsg);
diff --git a/source/libs/sync/src/syncRequestVoteReply.c b/source/libs/sync/src/syncRequestVoteReply.c
index eeddb708ab..add237c2d0 100644
--- a/source/libs/sync/src/syncRequestVoteReply.c
+++ b/source/libs/sync/src/syncRequestVoteReply.c
@@ -46,7 +46,7 @@ int32_t syncNodeOnRequestVoteReply(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   if (!syncNodeInRaftGroup(ths, &(pMsg->srcId))) {
     syncLogRecvRequestVoteReply(ths, pMsg, "not in my config");
 
-    TAOS_RETURN(TSDB_CODE_FAILED);
+    TAOS_RETURN(TSDB_CODE_SYN_MISMATCHED_SIGNATURE);
   }
   SyncTerm currentTerm = raftStoreGetTerm(ths);
   // drop stale response