diff --git a/rest_framework/routers.py b/rest_framework/routers.py
index 789f0217f..0dfb2bb48 100644
--- a/rest_framework/routers.py
+++ b/rest_framework/routers.py
@@ -30,6 +30,7 @@ from rest_framework.reverse import reverse
 from rest_framework.settings import api_settings
 from rest_framework.urlpatterns import format_suffix_patterns
 
+
 Route = namedtuple('Route', ['url', 'mapping', 'name', 'initkwargs'])
 DynamicDetailRoute = namedtuple('DynamicDetailRoute', ['url', 'name', 'initkwargs'])
 DynamicListRoute = namedtuple('DynamicListRoute', ['url', 'name', 'initkwargs'])