diff --git a/SPECS/celt051.spec b/SPECS/celt051.spec
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+Name:           celt051
+Version:        0.5.1.3
+Release:        15%{?dist}
+Summary:        An audio codec for use in low-delay speech and audio communication
+
+Group:          System Environment/Libraries
+License:        BSD
+# Files without license header are confirmed to be BSD. Will be fixed in later release
+# http://lists.xiph.org/pipermail/celt-dev/2009-February/000063.html
+URL:            http://www.celt-codec.org/
+Source0:        http://downloads.us.xiph.org/releases/celt/celt-%{version}.tar.gz
+
+BuildRequires: libogg-devel
+
+%description
+CELT (Constrained Energy Lapped Transform) is an ultra-low delay audio
+codec designed for realtime transmission of high quality speech and audio.
+This is meant to close the gap between traditional speech codecs
+(such as Speex) and traditional audio codecs (such as Vorbis).
+
+The CELT bitstream format is not yet stable, this package is a special
+version of 0.5.1 that has the same bitstream format, but symbols and files
+renamed from 'celt*' to 'celt051*' so that it is parallel installable with
+the normal celt for packages requiring this particular bitstream format.
+
+%package devel
+Summary: Development package for %{name}
+Group: Development/Libraries
+Requires: libogg-devel
+Requires: %{name} = %{version}-%{release}
+Requires: pkgconfig
+
+%description devel
+The %{name}-devel package contains libraries and header files for
+developing applications that use %{name}.
+
+%prep
+%setup -q -n celt-%{version}
+
+%build
+%configure --disable-static
+# Remove rpath as per https://fedoraproject.org/wiki/Packaging/Guidelines#Beware_of_Rpath
+sed -i 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g' libtool
+sed -i 's|^runpath_var=LD_RUN_PATH|runpath_var=DIE_RPATH_DIE|g' libtool
+
+make %{?_smp_mflags}
+
+%install
+make install DESTDIR=$RPM_BUILD_ROOT
+rm $RPM_BUILD_ROOT%{_libdir}/libcelt051.la
+
+%post -p /sbin/ldconfig
+
+%postun -p /sbin/ldconfig
+
+%files
+%defattr(-,root,root,-)
+%doc COPYING README TODO
+%{_bindir}/celtenc051
+%{_bindir}/celtdec051
+%{_libdir}/libcelt051.so.0
+%{_libdir}/libcelt051.so.0.0.0
+
+%files devel
+%defattr(-,root,root,-)
+%doc COPYING README
+%{_includedir}/celt051
+%{_libdir}/pkgconfig/celt051.pc
+%{_libdir}/libcelt051.so
+
+%changelog
+* Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1.3-15
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
+
+* Wed Aug 02 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1.3-14
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild
+
+* Wed Jul 26 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1.3-13
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
+* Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1.3-12
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
+
+* Wed Feb 03 2016 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1.3-11
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild
+
+* Wed Jun 17 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-10
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
+
+* Fri Aug 15 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-9
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild
+
+* Sat Jun 07 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-8
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
+
+* Sat Aug 03 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-7
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild
+
+* Wed Feb 13 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-6
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild
+
+* Wed Jul 18 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-5
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild
+
+* Thu Jan 12 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild
+
+* Tue Feb 08 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.5.1.3-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild
+
+* Fri Jul  9 2010 Alexander Larsson <alexl@redhat.com> - 0.5.1.3-2
+- Update according to review (#612979)
+
+* Fri Jul  9 2010 Alexander Larsson <alexl@redhat.com> - 0.5.1.3-1
+- First fedora package, based on RHEL package version 0.5.1.3-0