diff --git a/Macaulay2.spec b/Macaulay2.spec
index ad11217..8fc48fc 100644
--- a/Macaulay2.spec
+++ b/Macaulay2.spec
@@ -17,6 +17,9 @@ Source0: http://www.math.uiuc.edu/Macaulay2/Downloads/SourceCode/Macaulay2-%{ver
 Source1: Macaulay2-svn_checkout.sh
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
+# http://bugzilla.redhat.com/253847
+ExcludeArch: ppc64
+
 Source10: Macaulay2.png
 Source11: Macaulay2.desktop
 Source20: etags.sh
@@ -202,6 +205,7 @@ fi
 %changelog
 * Wed Feb 25 2009 Rex Dieter <rdieter@fedoraproject.org> - 1.2-3
 - BR: libfac-devel,factory-devel >= 3.1
+- restore ExcludeArch: ppc64 (#253847)
 
 * Mon Feb 23 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_11_Mass_Rebuild