Glue only_event_fields into the sync rest servlet

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/events/utils.py b/synapse/events/utils.py

index 9a700d39bb..ce4fe55204 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -258,7 +258,7 @@ def serialize_event(e, time_now_ms, as_client_event=True,
     if as_client_event:
         d = event_format(d)
 
-    if (isinstance(only_event_fields, list) and
+    if (only_event_fields and isinstance(only_event_fields, list) and
             all(isinstance(f, basestring) for f in only_event_fields)):
         d = only_fields(d, only_event_fields)