diff --git a/zlib.changes b/zlib.changes
index f3e257f..69cc631 100644
--- a/zlib.changes
+++ b/zlib.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Jan  7 12:34:56 CET 2009 - olh@suse.de
+
+- obsolete old -XXbit packages (bnc#437293)
+
 -------------------------------------------------------------------
 Thu Apr 10 12:54:45 CEST 2008 - ro@suse.de
 
diff --git a/zlib.spec b/zlib.spec
index 93be5ca..241af0f 100644
--- a/zlib.spec
+++ b/zlib.spec
@@ -1,10 +1,17 @@
 #
 # spec file for package zlib (Version 1.2.3)
 #
-# Copyright (c) 2008 SUSE LINUX Products GmbH, Nuernberg, Germany.
-# This file and all modifications and additions to the pristine
-# package are under the same license as the package itself.
+# Copyright (c) 2009 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
+# All modifications and additions to the file contributed by third parties
+# remain the property of their copyright owners, unless otherwise agreed
+# upon. The license for this file, and modifications and additions to the
+# file, is the same license as for the pristine package itself (unless the
+# license for the pristine package is not an Open Source License, in which
+# case the license is the MIT License). An "Open Source License" is a
+# license that conforms to the Open Source Definition (Version 1.9)
+# published by the Open Source Initiative.
+
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
 
@@ -12,13 +19,18 @@
 
 
 Name:           zlib
-License:        Other uncritical OpenSource License
+License:        zlib/libpng License; zlib license. See http://zlib.net/zlib_license.html
 Group:          System/Libraries
 Provides:       libz
 Obsoletes:      libz
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      zlib-64bit
+%endif
+#
 Version:        1.2.3
-Release:        104
+Release:        133
 Summary:        Data Compression Library
 Source:         zlib-%{version}.tar.bz2
 Patch:          zlib-1.2.1-make-test.patch
@@ -48,6 +60,11 @@ Group:          Development/Languages/C and C++
 Provides:       libz:/usr/include/zlib.h
 Requires:       zlib = %{version} glibc-devel
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      zlib-devel-64bit
+%endif
+#
 
 %description devel
 This package contains all necessary include files and libraries needed
@@ -109,6 +126,8 @@ rm -rf %{buildroot}
 /usr/%{_lib}/libz.a
 
 %changelog
+* Wed Jan 07 2009 olh@suse.de
+- obsolete old -XXbit packages (bnc#437293)
 * Thu Apr 10 2008 ro@suse.de
 - added baselibs.conf file to build xxbit packages
   for multilib support