diff --git a/isso/tests/test_comments.py b/isso/tests/test_comments.py
index 4a3be7c2..ed4b8655 100644
--- a/isso/tests/test_comments.py
+++ b/isso/tests/test_comments.py
@@ -272,7 +272,7 @@ def testFetchAuthorization(self):
         r = self.get('/id/1?plain=1')
         self.assertEqual(r.status_code, 200)
 
-        self.client.delete_cookie('localhost.local', '1')
+        self.client.delete_cookie(key='1', domain='localhost')
         r = self.get('/id/1?plain=1')
         self.assertEqual(r.status_code, 403)