diff --git a/defender/tests.py b/defender/tests.py
index 28b69bc..93971da 100644
--- a/defender/tests.py
+++ b/defender/tests.py
@@ -18,7 +18,6 @@ from .connection import parse_redis_url, get_redis_connection
 from .models import AccessAttempt
 from .test import DefenderTestCase, DefenderTransactionTestCase
 
-
 # Django >= 1.7 compatibility
 try:
     LOGIN_FORM_KEY = '<form action="/admin/login/" method="post"'
@@ -614,7 +613,7 @@ class AccessAttemptTest(DefenderTestCase):
         # we shouldn't be blocked.
         # same IP different, usernames
         ip = '74.125.239.60'
-        for i in range(0, config.FAILURE_LIMIT+10):
+        for i in range(0, config.FAILURE_LIMIT + 10):
             login_username = u"{0}{1}".format(username, i)
             response = self._login(username=login_username, remote_addr=ip)
             # Check if we are in the same login page