diff --git a/synapse/rest/client/v2_alpha/auth.py b/synapse/rest/client/v2_alpha/auth.py
index 7a518e226f..4c726f05f5 100644
--- a/synapse/rest/client/v2_alpha/auth.py
+++ b/synapse/rest/client/v2_alpha/auth.py
@@ -90,6 +90,7 @@ if (window.onAuthDone != undefined) {
 </html>
 """
 
+
 class AuthRestServlet(RestServlet):
     """
     Handles Client / Server API authentication in any situations where it