diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 4b9d2b920f6f4b0dad91c7ffb55e900f8dd3a2b0..b8fd195aa6f91e6dd238900e7f8eeafe68fa6101 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -759,10 +759,6 @@ void tscCloseTscObj(STscObj* pObj) {
   taosTmrStopA(&(pObj->pTimer));
   tscFreeSqlObj(pSql);
 
-  if (pSql) {
-    sem_destroy(&pSql->rspSem);
-  }
-  
   pthread_mutex_destroy(&pObj->mutex);
   
   if (pObj->pDnodeConn != NULL) {