diff --git a/rt-tests.spec b/rt-tests.spec
index 8b401cb..116efc2 100644
--- a/rt-tests.spec
+++ b/rt-tests.spec
@@ -24,13 +24,11 @@ License:        GPL-2.0-only
 Group:          System/Benchmark
 URL:            https://git.kernel.org/pub/scm/utils/rt-tests/rt-tests.git
 Source0:        https://git.kernel.org/pub/scm/utils/rt-tests/rt-tests.git/snapshot/rt-tests-%{version}.tar.gz
+BuildRequires:  libnuma-devel
 BuildRequires:  python-rpm-macros
 BuildRequires:  python2-base
-# Not supported on some architectures
-ExcludeArch:    s390x s390 ppc ppc64 ppc64le
-%ifnarch %{arm}
-BuildRequires:  libnuma-devel
-%endif
+# Only supported on intel architectures
+ExclusiveArch:  %{ix86} x86_64
 
 %description
 Realtime Kernel Testsuite which measures Realtime attributes of the Kernel: