1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py
index 23f8b612ae..925a83c645 100644
--- a/synapse/events/__init__.py
+++ b/synapse/events/__init__.py
@@ -31,7 +31,7 @@ class _EventInternalMetadata(object):
         return dict(self.__dict__)
 
     def is_outlier(self):
-        return hasattr(self, "outlier") and self.outlier
+        return getattr(self, "outlier", False)
 
 
 def _event_dict_property(key):