diff --git a/ghc-colourista.spec b/ghc-colourista.spec
index 45605c3..77148f4 100644
--- a/ghc-colourista.spec
+++ b/ghc-colourista.spec
@@ -4,7 +4,10 @@
 %global pkg_name colourista
 %global pkgver %{pkg_name}-%{version}
 
+# colourista-test: unknown RTS option: -N
+%ifnarch s390x
 %bcond_without tests
+%endif
 
 Name:           ghc-%{pkg_name}
 Version:        0.1.0.1
@@ -115,5 +118,5 @@ This package provides the Haskell %{pkg_name} profiling library.
 
 
 %changelog
-* Sun Dec 19 2021 Mohamed El Morabity <melmorabity@fedoraproject.org> - 0.1.0.1-1
+* Mon Mar 21 2021 Mohamed El Morabity <melmorabity@fedoraproject.org> - 0.1.0.1-1
 - Initial RPM release