1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/util/caches/treecache.py b/synapse/util/caches/treecache.py
index 29d02f7e95..03bc1401b7 100644
--- a/synapse/util/caches/treecache.py
+++ b/synapse/util/caches/treecache.py
@@ -58,7 +58,7 @@ class TreeCache(object):
 
             if n:
                 break
-            node_and_keys[i+1][0].pop(k)
+            node_and_keys[i + 1][0].pop(k)
 
         popped, cnt = _strip_and_count_entires(popped)
         self.size -= cnt