diff --git a/types.go b/types.go
index 99d761c2..25c007d7 100644
--- a/types.go
+++ b/types.go
@@ -1,3 +1,7 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package xorm
 
 import (
diff --git a/xorm_test.go b/xorm_test.go
index c4e9b1b2..01ca166c 100644
--- a/xorm_test.go
+++ b/xorm_test.go
@@ -1,3 +1,7 @@
+// Copyright 2018 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package xorm
 
 import (