diff --git a/source/libs/executor/src/streamintervalsliceoperator.c b/source/libs/executor/src/streamintervalsliceoperator.c
index 77a75754b2..7ec47958d1 100644
--- a/source/libs/executor/src/streamintervalsliceoperator.c
+++ b/source/libs/executor/src/streamintervalsliceoperator.c
@@ -375,7 +375,8 @@ static int32_t doStreamIntervalSliceNext(SOperatorInfo* pOperator, SSDataBlock**
         }
       }
       default:
-        ASSERTS(false, "invalid SSDataBlock type");
+        code = TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
+        QUERY_CHECK_CODE(code, lino, _end);
     }
 
     code = setInputDataBlock(&pOperator->exprSupp, pBlock, TSDB_ORDER_ASC, MAIN_SCAN, true);