1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/handlers/e2e_room_keys.py b/synapse/handlers/e2e_room_keys.py
index 09c2888db6..a43fc7fc7e 100644
--- a/synapse/handlers/e2e_room_keys.py
+++ b/synapse/handlers/e2e_room_keys.py
@@ -267,7 +267,7 @@ class E2eRoomKeysHandler(object):
         defer.returnValue(results)
 
     @defer.inlineCallbacks
-    def delete_version(self, user_id, version):
+    def delete_version(self, user_id, version=None):
         """Deletes a given version of the user's e2e_room_keys backup
 
         Args: