diff --git a/libunistring.changes b/libunistring.changes
index dcd84eb..2360483 100644
--- a/libunistring.changes
+++ b/libunistring.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Aug 18 10:00:34 UTC 2017 - pgajdos@suse.com
+
+- try to not run tests in parallel, make check stucks randomly
+
 -------------------------------------------------------------------
 Fri May  5 06:51:45 UTC 2017 - pgajdos@suse.com
 
diff --git a/libunistring.spec b/libunistring.spec
index 275d64b..aba4e08 100644
--- a/libunistring.spec
+++ b/libunistring.spec
@@ -84,7 +84,8 @@ rm -f %{buildroot}/%{_libdir}/libunistring.la
 %ifarch %ix86
 sed -i 's:50000:50:g' tests/test-malloca.c
 %endif
-make check %{?_smp_mflags}
+# do not run tests in parallel, it stucks randomly
+make check
 %endif
 
 %files -n %{lname}