1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py

index cd6eb52316..fd8d14b680 100644
--- a/synapse/handlers/device.py
+++ b/synapse/handlers/device.py
@@ -468,7 +468,7 @@ class DeviceHandler(DeviceWorkerHandler):
             "stream_id": stream_id,
             "devices": devices,
             "master_key": master_key,
-            "self_signing_key": self_signing_key
+            "self_signing_key": self_signing_key,
         }
 
     @defer.inlineCallbacks