diff --git a/go/internal/gccgoimporter/testenv_test.go b/go/internal/gccgoimporter/testenv_test.go
index 10c11fd2..ff8e8a48 100644
--- a/go/internal/gccgoimporter/testenv_test.go
+++ b/go/internal/gccgoimporter/testenv_test.go
@@ -1,3 +1,7 @@
+// Copyright 2018 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 gccgoimporter
 
 // This file contains testing utilities copied from $GOROOT/src/internal/testenv/testenv.go.