1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/handlers/read_marker.py b/synapse/handlers/read_marker.py
index bad1acc634..05122fd5a6 100644
--- a/synapse/handlers/read_marker.py
+++ b/synapse/handlers/read_marker.py
@@ -40,7 +40,7 @@ class ReadMarkerHandler:
         the read marker has changed.
         """
 
-        with await self.read_marker_linearizer.queue((room_id, user_id)):
+        async with self.read_marker_linearizer.queue((room_id, user_id)):
             existing_read_marker = await self.store.get_account_data_for_room_and_type(
                 user_id, room_id, "m.fully_read"
             )