diff --git a/netpbm.changes b/netpbm.changes
index d4091a5..5ebefed 100644
--- a/netpbm.changes
+++ b/netpbm.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Jan  7 12:34:56 CET 2009 - olh@suse.de
+
+- obsolete old -XXbit packages (bnc#437293)
+
 -------------------------------------------------------------------
 Fri Nov 28 16:05:39 CET 2008 - nadvornik@suse.cz
 
diff --git a/netpbm.spec b/netpbm.spec
index d7d617b..0679033 100644
--- a/netpbm.spec
+++ b/netpbm.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package netpbm (Version 10.26.44)
 #
-# Copyright (c) 2008 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# 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
@@ -24,8 +24,13 @@ License:        Any permissive; Artistic License; BSD 3-Clause; GPL v2 or later;
 Group:          Productivity/Graphics/Convertors
 Provides:       pbmplus
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      netpbm-64bit
+%endif
+#
 Version:        10.26.44
-Release:        98
+Release:        99
 Summary:        A Powerful Graphics Conversion Package
 Source:         netpbm-%{version}-nohpcdtoppm-nojbig.tar.bz2
 Source1:        netpbm-%{version}-documentation.tar.bz2
@@ -57,6 +62,11 @@ License:        LGPL v2.1 or later
 Summary:        Libraries for the NetPBM (NetPortableBitmap) Graphic Formats
 Group:          System/Libraries
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      netpbm-64bit
+%endif
+#
 Provides:       libnetpbm = %{version}
 Obsoletes:      libnetpbm < %{version}
 
@@ -65,6 +75,11 @@ License:        LGPL v2.1 or later
 Summary:        Libraries for the NetPBM Graphic Formats - files mandatory for development
 Group:          Development/Libraries/C and C++
 AutoReqProv:    on
+# bug437293
+%ifarch ppc64
+Obsoletes:      netpbm-64bit
+%endif
+#
 Requires:       libnetpbm10 = %{version}
 Provides:       libnetpbm:/usr/include/pbm.h
 
@@ -224,6 +239,8 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/lib*.so
 
 %changelog
+* Wed Jan 07 2009 olh@suse.de
+- obsolete old -XXbit packages (bnc#437293)
 * Fri Nov 28 2008 nadvornik@suse.cz
 - fixed a crash in pamperspective by an update to newer
   version [bnc#440954]