diff --git a/udp.go b/udp.go
index 7940d095..c8ea23a3 100644
--- a/udp.go
+++ b/udp.go
@@ -1,3 +1,7 @@
+// Copyright 2011 Miek Gieben. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package dns
 
 import (
diff --git a/udp_linux.go b/udp_linux.go
index 00f948f5..10769ab8 100644
--- a/udp_linux.go
+++ b/udp_linux.go
@@ -1,3 +1,8 @@
+// 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.
+// Extensions of the original work are copyright (c) 2011 Miek Gieben
+
 // +build linux
 
 package dns
diff --git a/udp_other.go b/udp_other.go
index 37e77228..94d58480 100644
--- a/udp_other.go
+++ b/udp_other.go
@@ -1,3 +1,8 @@
+// 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.
+// Extensions of the original work are copyright (c) 2011 Miek Gieben
+
 // +build !linux
 
 package dns