diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index f13584e190..a98bb506e5 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -306,6 +306,7 @@ class SynapseHomeServer(HomeServer):
 current_mau_gauge = Gauge("synapse_admin_mau:current", "Current MAU")
 max_mau_gauge = Gauge("synapse_admin_mau:max", "MAU Limit")
 
+
 def setup(config_options):
     """
     Args: