diff --git a/babl.spec b/babl.spec
index bd0d74c..76f759b 100644
--- a/babl.spec
+++ b/babl.spec
@@ -1,7 +1,10 @@
 # skip tests known to be problematic in a specific version
-%global skip_checks_version 0.1.10
-# concurrency-stress-test: https://bugzilla.gnome.org/show_bug.cgi?id=673419
-%global skip_checks concurrency-stress-test
+%global skip_checks_version 0.1.48
+%ifarch ppc64le
+%global skip_checks chromaticities srgb_to_lab_u8 models
+%else
+%global skip_checks none
+%endif
 
 %if ! 0%{?fedora}%{?rhel} || 0%{?fedora} >= 20 || 0%{?rhel} > 7
 %global develdocdir %{_docdir}/%{name}-devel/html