1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/util/caches/treecache.py b/synapse/util/caches/treecache.py

index dd4c9e6067..9a72218d85 100644
--- a/synapse/util/caches/treecache.py
+++ b/synapse/util/caches/treecache.py
@@ -9,6 +9,7 @@ class TreeCache(object):
     efficiently.
     Keys must be tuples.
     """
+
     def __init__(self):
         self.size = 0
         self.root = {}