1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py
index c3ff85c49a..cb08da4984 100644
--- a/synapse/events/__init__.py
+++ b/synapse/events/__init__.py
@@ -146,7 +146,7 @@ class EventBase(object):
         return field in self._event_dict
 
     def items(self):
-        return self._event_dict.items()
+        return list(self._event_dict.items())
 
 
 class FrozenEvent(EventBase):