diff --git a/source/dnode/mnode/impl/src/mndSync.c b/source/dnode/mnode/impl/src/mndSync.c
index 93c9192bed7c498221b28d6258608d0b1e4ca1af..8581d5fe8b16c657f0ed315999e7d74d8215e396 100644
--- a/source/dnode/mnode/impl/src/mndSync.c
+++ b/source/dnode/mnode/impl/src/mndSync.c
@@ -369,6 +369,7 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
   if (pMgmt->transId != 0) {
     mError("trans:%d, can't be proposed since trans:%d already waiting for confirm", transId, pMgmt->transId);
     taosThreadMutexUnlock(&pMgmt->lock);
+    rpcFreeCont(req.pCont);
     terrno = TSDB_CODE_MND_LAST_TRANS_NOT_FINISHED;
     return terrno;
   }