diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index f01652b7160d6124f0d6ee27fbda977cdc6de5c6..3360f6b26a1aa21ece9e14c10f3d46e6b287e386 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -1086,6 +1086,7 @@ _error_clean:
 _clean:
   taosCleanUpIntHash(pSql->pTableHashList);
   pSql->pTableHashList = NULL;
+  pSql->asyncTblPos    = NULL;
   return code;
 }