diff --git a/synapse/rest/client/room.py b/synapse/rest/client/room.py
index 790614d721..d0db85cca7 100644
--- a/synapse/rest/client/room.py
+++ b/synapse/rest/client/room.py
@@ -26,7 +26,7 @@ from prometheus_client.core import Histogram
from twisted.web.server import Request
from synapse import event_auth
-from synapse.api.constants import EventTypes, Membership
+from synapse.api.constants import Direction, EventTypes, Membership
from synapse.api.errors import (
AuthError,
Codes,
@@ -44,6 +44,7 @@ from synapse.http.servlet import (
RestServlet,
assert_params_in_dict,
parse_boolean,
+ parse_enum,
parse_integer,
parse_json_object_from_request,
parse_string,
@@ -1297,7 +1298,7 @@ class TimestampLookupRestServlet(RestServlet):
await self._auth.check_user_in_room_or_world_readable(room_id, requester)
timestamp = parse_integer(request, "ts", required=True)
- direction = parse_string(request, "dir", default="f", allowed_values=["f", "b"])
+ direction = parse_enum(request, "dir", Direction, default=Direction.FORWARDS)
(
event_id,
|
