diff --git a/sys/kern/sys_eventfd.c b/sys/kern/sys_eventfd.c
--- a/sys/kern/sys_eventfd.c
+++ b/sys/kern/sys_eventfd.c
@@ -1,9 +1,7 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
  *
- * Copyright (c) 2007 Roman Divacky
  * Copyright (c) 2014 Dmitry Chagin
- * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions