diff --git a/python-flask.spec b/python-flask.spec
index e10cf8e..7bbde9b 100644
--- a/python-flask.spec
+++ b/python-flask.spec
@@ -63,7 +63,7 @@ ln -s %{modname}-%{python3_version} %{buildroot}%{_bindir}/%{modname}-3
 ln -sf %{modname}-3 %{buildroot}%{_bindir}/%{modname}
 
 %check
-%pytest
+%pytest -Wdefault
 
 %files -n python3-%{modname}
 %license LICENSE.rst