diff --git a/python-ethtool.spec b/python-ethtool.spec
index bf02a6b..bfd8b58 100644
--- a/python-ethtool.spec
+++ b/python-ethtool.spec
@@ -60,7 +60,7 @@ mv %{buildroot}{%{_bindir},%{_sbindir}}/pethtool
 %python_clone -a %{buildroot}%{_sbindir}/pethtool
 
 %check
-%python_expand PYTHONPATH=%{buildroot}%{$python_sitearch} $python -m unittest discover -v
+%pyunittest_arch -v
 
 %post
 # %%python_install_alternative for %{_sbindir} binaries