diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index 55e7b16bcc125a20760975507aa2c0053ec70b4f..ecde02355a7d64bf08fed33fe5d339455325fb75 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -1220,6 +1220,7 @@ _error_clean:
 _clean:
   taosCleanUpIntHash(pSql->pTableHashList);
   pSql->pTableHashList = NULL;
+  pSql->asyncTblPos    = NULL;
   return code;
 }