diff --git a/oidc_provider/lib/errors.py b/oidc_provider/lib/errors.py
index 8533a75..5cd07d1 100644
--- a/oidc_provider/lib/errors.py
+++ b/oidc_provider/lib/errors.py
@@ -7,7 +7,8 @@ except ImportError:
 class RedirectUriError(Exception):
 
     error = 'Redirect URI Error'
-    description = 'The request fails due to a missing, invalid, or mismatching redirection URI (redirect_uri).'
+    description = 'The request fails due to a missing, invalid, or mismatching' \
+                  ' redirection URI (redirect_uri).'
 
 
 class ClientIdError(Exception):
diff --git a/oidc_provider/urls.py b/oidc_provider/urls.py
index 93033f3..0ad05b0 100644
--- a/oidc_provider/urls.py
+++ b/oidc_provider/urls.py
@@ -15,12 +15,13 @@ urlpatterns = [
     url(r'^token/?$', csrf_exempt(views.TokenView.as_view()), name='token'),
     url(r'^userinfo/?$', csrf_exempt(views.userinfo), name='userinfo'),
     url(r'^end-session/?$', views.EndSessionView.as_view(), name='end-session'),
-
-    url(r'^\.well-known/openid-configuration/?$', views.ProviderInfoView.as_view(), name='provider-info'),
+    url(r'^\.well-known/openid-configuration/?$', views.ProviderInfoView.as_view(),
+        name='provider-info'),
     url(r'^jwks/?$', views.JwksView.as_view(), name='jwks'),
 ]
 
 if settings.get('OIDC_SESSION_MANAGEMENT_ENABLE'):
     urlpatterns += [
-        url(r'^check-session-iframe/?$', views.CheckSessionIframeView.as_view(), name='check-session-iframe'),
+        url(r'^check-session-iframe/?$', views.CheckSessionIframeView.as_view(),
+            name='check-session-iframe'),
     ]