flake8 fixes
diff --git a/tests/conftest.py b/tests/conftest.py
index 0b76395..55d9d0d 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -75,7 +75,7 @@
         self.capfd.readouterr()
         return self
 
-    def __exit__(self, *_):
+    def __exit__(self, *args):
         self.out, self.err = self.capfd.readouterr()
 
     def __eq__(self, other):