diff --git a/gc.spec b/gc.spec
index a58618c..9672e8e 100644
--- a/gc.spec
+++ b/gc.spec
@@ -97,7 +97,12 @@ rm -fv  %{buildroot}%{_libdir}/lib*.la
 
 %check
 make check
-make check -C libatomic_ops ||:
+# ignore results on powerpc - the atomic stack feature is not working correctly
+# there (#883748)
+%ifarch ppc ppc64
+%global arch_ignore ||:
+%endif
+make check -C libatomic_ops %{?arch_ignore}
 
 
 %clean
@@ -145,6 +150,7 @@ rm -rf %{buildroot}
 %changelog
 * Wed Oct 30 2013 Pavel Raiskup <praiskup@redhat.com> - 7.2d-4
 - add support for aarch64 (#969817)
+- ignore testsuite results only for powerpc
 
 * Sat Aug 03 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 7.2d-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild