diff --git a/sys/libkern/strdup.c b/sys/libkern/strdup.c
index 82cece0c1d24..e042599e5623 100644
--- a/sys/libkern/strdup.c
+++ b/sys/libkern/strdup.c
@@ -2,10 +2,10 @@
  * Copyright (c) 2003 Networks Associates Technology, Inc.
  * All rights reserved.
  *
- * This software was developed for the FreeBSD Project by NAI Labs,
- * the Security Research Division of Network Associates, Inc. under
- * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
- * CHATS research program.
+ * This software was developed for the FreeBSD Project by Network
+ * Associates Laboratories, the Security Research Division of Network
+ * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -15,9 +15,6 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. The names of the authors may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE