diff --git a/internal/util/mqclient/reader.go b/internal/util/mqclient/reader.go
index 7aacf7fc93..eaa32d1a88 100644
--- a/internal/util/mqclient/reader.go
+++ b/internal/util/mqclient/reader.go
@@ -1,3 +1,14 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License.
+
 package mqclient
 
 import (