diff --git a/python-wheel.spec b/python-wheel.spec
index f31a22a..ab79d61 100644
--- a/python-wheel.spec
+++ b/python-wheel.spec
@@ -108,6 +108,7 @@ ln -s %{pypi_name}-2 %{buildroot}%{_bindir}/%{pypi_name}
 
 %if ! %{with bootstrap}
 %check
+export LC_ALL=C.UTF-8
 rm setup.cfg
 %if %{with python2}
 PYTHONPATH=%{buildroot}%{python2_sitelib} py.test-2 -v --ignore build