diff --git a/virt-top.spec b/virt-top.spec
index 6c3b610..d867fde 100644
--- a/virt-top.spec
+++ b/virt-top.spec
@@ -11,6 +11,7 @@ License:        GPLv2+
 URL:            http://et.redhat.com/~rjones/virt-top/
 Source0:        http://et.redhat.com/~rjones/virt-top/files/%{name}-%{version}.tar.gz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
+ExcludeArch:    sparc64 s390 s390x
 
 Patch0:         virt-top-1.0.3-bogus-zh_CN-plurals.patch
 
@@ -98,6 +99,10 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Thu Apr 16 2009 S390x secondary arch maintainer <fedora-s390x@lists.fedoraproject.org>
+- ExcludeArch sparc64, s390, s390x as we don't have OCaml on those archs
+  (added sparc64 per request from the sparc maintainer)
+
 * Wed Feb 25 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.0.3-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_11_Mass_Rebuild