1 files changed, 2 insertions, 5 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index cf4333a923..edf1b918eb 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -92,11 +92,8 @@ class Auth:
     async def check_from_context(
         self, room_version: str, event, context, do_sig_check=True
     ) -> None:
-        prev_state_ids = await context.get_prev_state_ids()
-        auth_events_ids = self.compute_auth_events(
-            event, prev_state_ids, for_verification=True
-        )
-        auth_events_by_id = await self.store.get_events(auth_events_ids)
+        auth_event_ids = event.auth_event_ids()
+        auth_events_by_id = await self.store.get_events(auth_event_ids)
         auth_events = {(e.type, e.state_key): e for e in auth_events_by_id.values()}
 
         room_version_obj = KNOWN_ROOM_VERSIONS[room_version]