diff --git a/synapse/storage/event_push_actions.py b/synapse/storage/event_push_actions.py
index ea56d4d06..f787431b7 100644
--- a/synapse/storage/event_push_actions.py
+++ b/synapse/storage/event_push_actions.py
@@ -769,7 +769,7 @@ class EventPushActionsStore(SQLBaseStore):
             Deferred
         """
 
-        is_highlight = is_highlight = 1 if _action_has_highlight(actions) else 0
+        is_highlight = 1 if _action_has_highlight(actions) else 0
 
         return self._simple_insert(
             table="event_push_actions_staging",