diff --git a/synapse/push/baserules.py b/synapse/push/baserules.py
index bf6ee67100..0443ee3779 100644
--- a/synapse/push/baserules.py
+++ b/synapse/push/baserules.py
@@ -58,6 +58,7 @@ def make_base_append_rules(user, kind):
 
     return rules
 
+
 def make_base_prepend_rules(user, kind):
     rules = []