diff --git a/MozillaThunderbird.changes b/MozillaThunderbird.changes
index 40f8b37..ea6d653 100644
--- a/MozillaThunderbird.changes
+++ b/MozillaThunderbird.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Wed Mar 28 01:31:17 CEST 2018 - ro@suse.de
+
+- Exclude bigendian archs for now, have not built
+  since version 45.8.0
+  ExcludeArch: ppc ppc64 s390 s390x
+
 -------------------------------------------------------------------
 Fri Mar 23 09:39:40 UTC 2018 - wr@rosenauer.org
 
diff --git a/MozillaThunderbird.spec b/MozillaThunderbird.spec
index f23307d..478f10a 100644
--- a/MozillaThunderbird.spec
+++ b/MozillaThunderbird.spec
@@ -115,6 +115,9 @@ BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 PreReq:         coreutils fileutils textutils /bin/sh
 Recommends:     libcanberra0
 Recommends:     libpulse0
+# Exclude bigendian archs for now, have not built
+# since version 45.8.0
+ExcludeArch:    ppc ppc64 s390 s390x
 ### build options
 %ifarch aarch64 ppc ppc64 ppc64le s390 s390x ia64 %arm
 %define crashreporter 0