diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index 7c95526f26..d361148701 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -221,9 +221,8 @@ static void deregisterRequest(SRequestObj *pRequest) {
     }
   }
 
-  if (duration >= ((pTscObj->pAppInfo->monitorParas.tsSlowLogThreshold * 1000000UL ||
-                   duration >= tsSlowLogThresholdTest * 1000000UL) &&
-                       strcmp(pRequest->pDb, tsSlowLogExceptDb) != 0)) {
+  if (duration >= ((pTscObj->pAppInfo->monitorParas.tsSlowLogThreshold * 1000000UL || duration >= tsSlowLogThresholdTest * 1000000UL) &&
+      (pRequest->pDb == NULL || strcmp(pRequest->pDb, tsSlowLogExceptDb) != 0))) {
     atomic_add_fetch_64((int64_t *)&pActivity->numOfSlowQueries, 1);
     if (pTscObj->pAppInfo->monitorParas.tsSlowLogScope & reqType) {
       taosPrintSlowLog("PID:%d, Conn:%u, QID:0x%" PRIx64 ", Start:%" PRId64 " us, Duration:%" PRId64 "us, SQL:%s",