diff --git a/transport/ipc/ipc_options.go b/transport/ipc/ipc_options.go
index abba156..530898b 100644
--- a/transport/ipc/ipc_options.go
+++ b/transport/ipc/ipc_options.go
@@ -1,6 +1,4 @@
-// +build !windows,!plan9,!js
-
-// Copyright 2019 The Mangos Authors
+// Copyright 2020 The Mangos Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use file except in compliance with the License.
diff --git a/transport/ipc/ipc_unix.go b/transport/ipc/ipc_unix.go
index fc4a9f4..9253b76 100644
--- a/transport/ipc/ipc_unix.go
+++ b/transport/ipc/ipc_unix.go
@@ -1,6 +1,6 @@
 // +build !windows,!plan9,!js
 
-// Copyright 2019 The Mangos Authors
+// Copyright 2020 The Mangos Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use file except in compliance with the License.