diff --git a/synapse/storage/monthly_active_users.py b/synapse/storage/monthly_active_users.py
index 01963c879f..cf4104dc2e 100644
--- a/synapse/storage/monthly_active_users.py
+++ b/synapse/storage/monthly_active_users.py
@@ -191,6 +191,7 @@ class MonthlyActiveUsersStore(SQLBaseStore):
 
     def upsert_monthly_active_user_txn(self, txn, user_id):
         """Updates or inserts monthly active user member
+
         Note that, after calling this method, it will generally be necessary
         to invalidate the caches on user_last_seen_monthly_active and
         get_monthly_active_count. We can't do that here, because we are running