diff --git a/tests/test_downloadermiddleware_cookies.py b/tests/test_downloadermiddleware_cookies.py
index 6da733bd1..1df253935 100644
--- a/tests/test_downloadermiddleware_cookies.py
+++ b/tests/test_downloadermiddleware_cookies.py
@@ -299,7 +299,7 @@ class CookiesMiddlewareTest(TestCase):
 
         target['headers'] = {
             'Location': target['url'],
-        },
+        }
         response = Response(**target)
         self.assertEqual(
             self.mw.process_response(request1, response, self.spider),