diff --git a/hdf5.spec b/hdf5.spec
index 7154721..addb268 100644
--- a/hdf5.spec
+++ b/hdf5.spec
@@ -4,7 +4,7 @@
 # You need to recompile all users of HDF5 for each version change
 Name: hdf5
 Version: 1.8.11
-Release: 5%{?dist}
+Release: 6%{?dist}
 Summary: A general purpose library and file format for storing scientific data
 License: BSD
 Group: System Environment/Libraries
@@ -262,6 +262,9 @@ cp -p debian/man/*.1 ${RPM_BUILD_ROOT}%{_mandir}/man1/
 
 %check
 make -C build check
+# disable parallel tests on s390(x) - something gets wrong in DNS resolver in glibc
+# they are passed when run manually in mock
+%ifnarch s390 s390x
 export HDF5_Make_Ignore=yes
 for mpi in %{mpi_list}
 do
@@ -269,6 +272,7 @@ do
   make -C $mpi check
   module purge
 done
+%endif
 
 
 %post -p /sbin/ldconfig
@@ -401,6 +405,9 @@ done
 
 
 %changelog
+* Fri Aug 30 2013 Dan Horák <dan[at]danny.cz> - 1.8.11-6
+- disable parallel tests on s390(x)
+
 * Sat Aug 03 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.8.11-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild