1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index cde9a2ecef..faf0770c66 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -236,7 +236,7 @@ class EventContentFields:
     AUTHORISING_USER: Final = "join_authorised_via_users_server"
 
     # Use for mentioning users.
-    MSC3952_MENTIONS: Final = "org.matrix.msc3952.mentions"
+    MENTIONS: Final = "m.mentions"
 
     # an unspecced field added to to-device messages to identify them uniquely-ish
     TO_DEVICE_MSGID: Final = "org.matrix.msgid"