diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 7151860b45..0370b3c5b1 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -2075,6 +2075,7 @@ int32_t syncNodeOnHeartbeat(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
       SyncLocalCmd* pSyncMsg = rpcMsgLocalCmd.pCont;
       pSyncMsg->cmd = SYNC_LOCAL_CMD_FOLLOWER_CMT;
       pSyncMsg->fcIndex = pMsg->commitIndex;
+      SyncIndex fcIndex = pSyncMsg->fcIndex;
 
       if (ths->syncEqMsg != NULL && ths->msgcb != NULL) {
         int32_t code = ths->syncEqMsg(ths->msgcb, &rpcMsgLocalCmd);
@@ -2082,7 +2083,7 @@ int32_t syncNodeOnHeartbeat(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
           sError("vgId:%d, sync enqueue fc-commit msg error, code:%d", ths->vgId, code);
           rpcFreeCont(rpcMsgLocalCmd.pCont);
         } else {
-          sTrace("vgId:%d, sync enqueue fc-commit msg, fc-index:%" PRId64, ths->vgId, pSyncMsg->fcIndex);
+          sTrace("vgId:%d, sync enqueue fc-commit msg, fc-index:%" PRId64, ths->vgId, fcIndex);
         }
       }
     }