diff --git a/src/runtime/print1_write.go b/src/runtime/print1_write.go
index 5fd7d65..6b1467b 100644
--- a/src/runtime/print1_write.go
+++ b/src/runtime/print1_write.go
@@ -1,3 +1,7 @@
+// Copyright 2009 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.
+
 // +build !android
 
 package runtime
diff --git a/src/runtime/print1_write_android.go b/src/runtime/print1_write_android.go
index d086e84..31093de 100644
--- a/src/runtime/print1_write_android.go
+++ b/src/runtime/print1_write_android.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 runtime
 
 import "unsafe"