diff --git a/ibus-typing-booster.spec b/ibus-typing-booster.spec
index afb984c..cd8ba83 100644
--- a/ibus-typing-booster.spec
+++ b/ibus-typing-booster.spec
@@ -1,6 +1,6 @@
 Name:       ibus-typing-booster
 Version:    2.14.0
-Release:    1%{?dist}
+Release:    2%{?dist}
 Summary:    A completion input method
 License:    GPLv3+ and ASL 2.0
 URL:        https://mike-fabian.github.io/ibus-typing-booster/
@@ -87,6 +87,13 @@ BuildRequires: make
 # A window manger is needed for the GUI test
 # BuildRequires:  i3
 BuildArch:  noarch
+# Some test cases fail on ppc64 and s390x (because of some bugs on
+# these platforms I think).  This makes the build fail for no good
+# reason if it accidentally is build on one of these platforms.
+#
+# So even though this is a noarch package, tell koji to never build it
+# on ppc64 and s390x:
+ExcludeArch: ppc64 s390x
 
 %description
 Ibus-typing-booster is a context sensitive completion
@@ -239,6 +246,9 @@ fi
 %{_datadir}/applications/emoji-picker.desktop
 
 %changelog
+* Thu Aug 12 2021 Mike FABIAN <mfabian@redhat.com> - 2.14.0-2
+- Add “ExcludeArch: ppc64 s390x” for koji to the .spec file
+
 * Thu Aug 12 2021 Mike FABIAN <mfabian@redhat.com> - 2.14.0-1
 - Update to 2.14.0
 - Translation update from Weblate (de, nl, pl, sv, tr, uk updated to 100%)