diff --git a/libraries/libldap/ppolicy.c b/libraries/libldap/ppolicy.c
index b9c8866c43..e77a7c47de 100644
--- a/libraries/libldap/ppolicy.c
+++ b/libraries/libldap/ppolicy.c
@@ -2,6 +2,8 @@
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
  * Copyright 2004 The OpenLDAP Foundation.
+ * Portions Copyright 2004 Hewlett-Packard Company.
+ * Portions Copyright 2004 Howard Chu, Symas Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -12,6 +14,11 @@
  * top-level directory of the distribution or, alternatively, at
  * <http://www.OpenLDAP.org/license.html>.
  */
+/* ACKNOWLEDGEMENTS:
+ * This work was developed by Howard Chu for inclusion in
+ * OpenLDAP Software, based on prior work by Neil Dunbar (HP).
+ * This work was sponsored by the Hewlett-Packard Company.
+ */
 
 #include "portable.h"