diff --git a/SPECS/libart_lgpl.spec b/SPECS/libart_lgpl.spec
index 5e3602c..796a50a 100644
--- a/SPECS/libart_lgpl.spec
+++ b/SPECS/libart_lgpl.spec
@@ -1,7 +1,7 @@
 Summary: Library of graphics routines used by libgnomecanvas
 Name: libart_lgpl
 Version: 2.3.21
-Release: 9%{?dist}
+Release: 10%{?dist}
 URL: http://www.gnome.org/
 Source0: http://ftp.gnome.org/pub/gnome/sources/libart_lgpl/2.3/%{name}-%{version}.tar.bz2
 #Fedora specific patch
@@ -40,7 +40,7 @@ make install DESTDIR=$RPM_BUILD_ROOT INSTALL="install -p"
 find $RPM_BUILD_ROOT -name '*.la' -exec rm -f {} ';'
 
 # fix multilib issues
-%ifarch x86_64 s390x ia64 ppc64 alpha sparc64 aarch64
+%if %{__isa_bits} == 64
 %define wordsize 64
 %else
 %define wordsize 32
@@ -84,6 +84,9 @@ EOF
 %{_includedir}/*
 
 %changelog
+* Mon Aug 18 2014 Peter Robinson <probinson@redhat.com> - 2.3.21-10
+- Generic 32/64 bit platform detection - fix ppc64le build
+
 * Fri Jan 24 2014 Daniel Mach <dmach@redhat.com> - 2.3.21-9
 - Mass rebuild 2014-01-24