diff --git a/pari.changes b/pari.changes
index a512b16..1c4def4 100644
--- a/pari.changes
+++ b/pari.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sun Jan  6 20:10:01 UTC 2013 - jengelh@inai.de
+
+- Restore original library filename after confirming with upstream
+  (This change is transparent to all users)
+
 -------------------------------------------------------------------
 Thu Nov 29 19:09:42 UTC 2012 - jengelh@inai.de
 
diff --git a/pari.spec b/pari.spec
index a9dbda9..da7bc67 100644
--- a/pari.spec
+++ b/pari.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package pari
 #
-# Copyright (c) 2011 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2013 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
@@ -15,25 +15,30 @@
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
 
+
 Name:           pari
 %define lname	libpari-gmp3
 Version:        2.5.3
 Release:        0
-Group:          Productivity/Scientific/Math
-Summary:	Computer Algebra System for fast computations in Number Theory
+Summary:        Computer Algebra System for fast computations in Number Theory
 License:        GPL-2.0
-URL:            http://pari.math.u-bordeaux.fr/
+Group:          Productivity/Scientific/Math
+Url:            http://pari.math.u-bordeaux.fr/
 
 #DL-URL:	http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-2.5.3.tar.gz
 Source:         %name-%version.tar.xz
-Source2:	http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-2.5.3.changelog
+Source2:        http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-2.5.3.changelog
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
-BuildRequires:	gmp-devel, readline-devel
-BuildRequires:	fltk-devel, libqt4-devel, xz
+BuildRequires:  fltk-devel
+BuildRequires:  gmp-devel
+BuildRequires:  libqt4-devel
+BuildRequires:  readline-devel
+BuildRequires:  xz
 %if 0%{?suse_version} >= 1220
-BuildRequires:	libX11-devel, xorg-x11-proto-devel
+BuildRequires:  libX11-devel
+BuildRequires:  xorg-x11-proto-devel
 %else
-BuildRequires:	xorg-x11-devel
+BuildRequires:  xorg-x11-devel
 %endif
 
 %description
@@ -45,8 +50,8 @@ power series, algebraic numbers etc., and a lot of transcendental
 functions.
 
 %package gp
-Summary:	Frontend to the PARI Computer Algebra System
-Group:		Productivity/Scientific/Math
+Summary:        Frontend to the PARI Computer Algebra System
+Group:          Productivity/Scientific/Math
 
 %description gp
 PARI/GP is a computer algebra system designed for fast computations
@@ -57,10 +62,10 @@ power series, algebraic numbers etc., and a lot of transcendental
 functions.
 
 %package -n %lname
-Summary:	Computer Algebra System library for fast computations in Number Theory
-Group:		System/Libraries
+Summary:        Computer Algebra System library for fast computations in Number Theory
+Group:          System/Libraries
 # This is used by the data packages to avoid having a too-old version of libpari:
-Provides:	libpari-gmp = %version-%release
+Provides:       libpari-gmp = %version-%release
 
 %description -n %lname
 PARI/GP is a computer algebra system designed for fast computations
@@ -71,9 +76,9 @@ power series, algebraic numbers etc., and a lot of transcendental
 functions.
 
 %package devel
-Summary:	Development files for the PARI CAS
-Group:		Development/Libraries/C and C++
-Requires:	%lname = %version
+Summary:        Development files for the PARI CAS
+Group:          Development/Libraries/C and C++
+Requires:       %lname = %version
 
 %description devel
 PARI/GP is a computer algebra system designed for fast computations
@@ -101,15 +106,6 @@ cp "%{S:2}" .;
 b="%buildroot";
 make install DESTDIR="$b";
 
-# Put library in the right spot and fix the SO version abuse
-if [ -L "$b/%_libdir/libpari-gmp.so.3" ]; then
-	rm -f "$b/%_libdir/libpari-gmp.so.3";
-fi;
-mv "$b/%_libdir/libpari-gmp.so.%version" "$b/%_libdir/libpari-gmp.so.3";
-ln -fs libpari-gmp.so.3 "$b/%_libdir/libpari-gmp-%version.so";
-ln -fs libpari-gmp-%version.so "$b/%_libdir/libpari-gmp.so";
-ln -fs libpari-gmp-%version.so "$b/%_libdir/libpari.so";
-
 %post -n %lname -p /sbin/ldconfig
 
 %postun -n %lname -p /sbin/ldconfig
@@ -122,15 +118,19 @@ ln -fs libpari-gmp-%version.so "$b/%_libdir/libpari.so";
 %_mandir/man*/*
 %doc %name-%version.changelog
 
+#
+# See
+# http://pari.math.u-bordeaux.fr/archives/pari-dev-1211/msg00006.html
+# for details on the SO versioning.
+#
 %files -n libpari-gmp3
 %defattr(-,root,root)
-%_libdir/*.so.*
-%_libdir/libpari-gmp-%version.so
+%_libdir/libpari-gmp.so.%version
+%_libdir/libpari-gmp.so.3
 
 %files devel
 %defattr(-,root,root)
 %_includedir/pari
 %_libdir/libpari.so
-%_libdir/libpari-gmp.so
 
 %changelog