diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 73bc73a45e864e5361b6e13d9608b0d71831d914..99cb7db0db40d97995a93b3c29377b02f2003d3a 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -356,7 +356,7 @@ class RoomCreationHandler(BaseHandler):
 
 class RoomContextHandler(BaseHandler):
     @defer.inlineCallbacks
-    def get_event_context(self, user, room_id, event_id, limit, is_guest):
+    def get_event_context(self, user, room_id, event_id, limit):
         """Retrieves events, pagination tokens and state around a given event
         in a room.
 
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 2ebf5e59a0f40fd76056855aa21fa670ec67de13..6554f57df1dc2dd54be632287aa6f49803fa3de9 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -505,7 +505,6 @@ class RoomEventContext(ClientV1RestServlet):
             room_id,
             event_id,
             limit,
-            requester.is_guest,
         )
 
         if not results: