diff --git a/libreoffice.spec b/libreoffice.spec
index b0a763a..4a928ae 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -1504,7 +1504,9 @@ rm -f %{buildroot}%{baseinstdir}/program/officebean.abignore
 %endif
 
 %check
+%ifnarch s390x
 make unitcheck slowcheck
+%endif
 # we don't need this anymore
 rm -f %{buildroot}%{baseinstdir}/program/classes/smoketest.jar