diff --git a/src/os/os_windows_test.go b/src/os/os_windows_test.go
index 4de208ee10..66e5d42b00 100644
--- a/src/os/os_windows_test.go
+++ b/src/os/os_windows_test.go
@@ -1,3 +1,7 @@
+// Copyright 2014 The Go 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 os_test
 
 import (