diff --git a/source/libs/executor/src/executorInt.c b/source/libs/executor/src/executorInt.c
index 0b78544037..1ab677291c 100644
--- a/source/libs/executor/src/executorInt.c
+++ b/source/libs/executor/src/executorInt.c
@@ -862,7 +862,7 @@ void doBuildStreamResBlock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGr
   } else {
     memcpy(pBlock->info.parTbName, tbname, TSDB_TABLE_NAME_LEN);
   }
-  tdbFree(tbname);
+  streamFreeVal(tbname);
 }
 
 void doBuildResultDatablock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGroupResInfo* pGroupResInfo,