diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 83e41c36a9f4944f211726e99276c4f69910d8bd..65b9af611aca39cf7a4ddd3ecc8bb20716f4a207 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -685,7 +685,7 @@ int32_t setSlidingClause(SQueryInfo* pQueryInfo, SQuerySQL* pQuerySql) {
       return invalidSqlErrMsg(pQueryInfo->msg, msg1);
     }
   } else {
-    pSliding->n = pQueryInfo->nAggTimeInterval;
+    pQueryInfo->nSlidingTime = -1;
   }
 
   return TSDB_CODE_SUCCESS;