diff --git a/security/nss/cmd/zlib/config.mk b/security/nss/cmd/zlib/config.mk
index 53c5f1f5002..6e32dc6c912 100644
--- a/security/nss/cmd/zlib/config.mk
+++ b/security/nss/cmd/zlib/config.mk
@@ -1,11 +1,34 @@
-#
-#           CONFIDENTIAL AND PROPRIETARY SOURCE CODE OF
-#              NETSCAPE COMMUNICATIONS CORPORATION
-# Copyright ¿ 1996, 1997 Netscape Communications Corporation.  All Rights
-# Reserved.  Use of this Source Code is subject to the terms of the
-# applicable license agreement from Netscape Communications Corporation.
-# The copyright notice(s) in this Source Code does not indicate actual or
-# intended publication of this Source Code.
+# 
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+# 
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+# 
+# The Original Code is the Netscape security libraries.
+# 
+# The Initial Developer of the Original Code is Netscape
+# Communications Corporation.  Portions created by Netscape are 
+# Copyright (C) 1994-2000 Netscape Communications Corporation.  All
+# Rights Reserved.
+# 
+# Contributor(s):
+# 
+# Alternatively, the contents of this file may be used under the
+# terms of the GNU General Public License Version 2 or later (the
+# "GPL"), in which case the provisions of the GPL are applicable 
+# instead of those above.  If you wish to allow use of your 
+# version of this file only under the terms of the GPL and not to
+# allow others to use your version of this file under the MPL,
+# indicate your decision by deleting the provisions above and
+# replace them with the notice and other provisions required by
+# the GPL.  If you do not delete the provisions above, a recipient
+# may use your version of this file under either the MPL or the
+# GPL.
 #
 
 #