diff --git a/src/crypto/x509/root_darwin_test.go b/src/crypto/x509/root_darwin_test.go
index 87ea4e344f..2e97b95b54 100644
--- a/src/crypto/x509/root_darwin_test.go
+++ b/src/crypto/x509/root_darwin_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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 x509
 
 import "testing"