diff --git a/synapse/event_auth.py b/synapse/event_auth.py
index b63a1afe93..cb133f3f84 100644
--- a/synapse/event_auth.py
+++ b/synapse/event_auth.py
@@ -21,7 +21,13 @@ from signedjson.key import decode_verify_key_bytes
from signedjson.sign import SignatureVerifyException, verify_signed_json
from unpaddedbase64 import decode_base64
-from synapse.api.constants import MAX_PDU_SIZE, EventTypes, JoinRules, Membership
+from synapse.api.constants import (
+ MAX_PDU_SIZE,
+ EventContentFields,
+ EventTypes,
+ JoinRules,
+ Membership,
+)
from synapse.api.errors import AuthError, EventSizeError, SynapseError
from synapse.api.room_versions import (
KNOWN_ROOM_VERSIONS,
@@ -236,7 +242,7 @@ def _can_federate(event: EventBase, auth_events: StateMap[EventBase]) -> bool:
if not creation_event:
return False
- return creation_event.content.get("m.federate", True) is True
+ return creation_event.content.get(EventContentFields.FEDERATE, True) is True
def _is_membership_change_allowed(
|