diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 85ea7a29f1e03f32744f62fdb6d70ae8da9b3fbe..c577097644d8b296db434a1b71e5e9d11a98b774 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -3121,8 +3121,7 @@ static int32_t mndRetrieveStbCol(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pB
       if (pShow->pIter == NULL) break;
     } else {
       fetch = true;
-      size_t keyLen = 0;
-      void  *pKey = taosHashGetKey(pShow->pIter, &keyLen);
+      void  *pKey = taosHashGetKey(pShow->pIter, NULL);
       pStb = sdbAcquire(pSdb, SDB_STB, pKey);
       if (!pStb) continue;
     }
diff --git a/tests/system-test/0-others/information_schema.py b/tests/system-test/0-others/information_schema.py
index 6234e3cd9288b4a389382cdde2589e860187389f..dd3bd4db83c5a7dbefff0af83159534bfd3f98ed 100644
--- a/tests/system-test/0-others/information_schema.py
+++ b/tests/system-test/0-others/information_schema.py
@@ -22,7 +22,7 @@ class TDTestCase:
     def init(self, conn, logSql, replicaVar=1):
         self.replicaVar = int(replicaVar)
         tdLog.debug("start to execute %s" % __file__)
-        tdSql.init(conn.cursor(), True)
+        tdSql.init(conn.cursor())
         self.setsql = TDSetSql()
         self.dbname = 'db'
         self.stbname = 'stb'