diff --git a/src/client/src/tscGlobalmerge.c b/src/client/src/tscGlobalmerge.c
index 14e426ee69f1b11fe09ef23d66190c75a2628e10..8e0ca0ab328de6f1b765e3e1f7ea457438cb9cae 100644
--- a/src/client/src/tscGlobalmerge.c
+++ b/src/client/src/tscGlobalmerge.c
@@ -967,7 +967,6 @@ SSDataBlock* doGlobalAggregate(void* param, bool* newgroup) {
 
       if (pOperator->pRuntimeEnv->pQueryAttr->order.order == TSDB_ORDER_DESC) {
         SWAP(w->skey, w->ekey, TSKEY);
-        assert(w->skey <= w->ekey);
       }
     }
   }