diff --git a/hfsplus-tools.spec b/hfsplus-tools.spec
index fd649ec..b742b09 100644
--- a/hfsplus-tools.spec
+++ b/hfsplus-tools.spec
@@ -1,6 +1,6 @@
 Name:           hfsplus-tools
 Version:        540.1.linux3
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Tools to create/check Apple HFS+ filesystems
 
 Group:          System Environment/Base
@@ -16,6 +16,9 @@ BuildRequires: openssl-devel
 BuildRequires: clang
 BuildRequires: libuuid-devel
 
+# no clang there
+ExcludeArch: ppc s390
+
 # those tools are outdated, given the rebuilt mkfs/fsck.hfsplus in this
 # package.  However, I don't want to Obsolete that package yet, as some people
 # may have a valid use for it on their systems. 
@@ -95,6 +98,9 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Wed Jun 12 2013 Dan Horák <dan[at]danny.cz> - 540.1.linux3-4
+- exclude ppc and s390, no working clang there
+
 * Thu Feb 14 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 540.1.linux3-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild