diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 2651d6657ddcabb50f2c80e47219dd587f02f317..b7cc85908c425ed711121b91ccf0835d61a24cb9 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -903,7 +903,7 @@ int32_t tscValidateSqlInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
           }
         } else if (pUser->type == TSDB_ALTER_USER_TAGS) {
           SStrToken* pTags = &pUser->tags;
-          if (pTags->n < 4) return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg8);
+          if (pTags->n > TSDB_TAGS_LEN - 1 ) return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg8);
         } else {
           return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg7);
         }