1 files changed, 3 insertions, 1 deletions
diff --git a/synapse/handlers/sliding_sync.py b/synapse/handlers/sliding_sync.py
index 306c4286e7..b4ecf87f2e 100644
--- a/synapse/handlers/sliding_sync.py
+++ b/synapse/handlers/sliding_sync.py
@@ -639,7 +639,9 @@ class SlidingSyncHandler:
             )
             rooms_should_send.update(rooms_that_have_updates)
             relevant_room_map = {
-                r: c for r, c in relevant_room_map.items() if r in rooms_should_send
+                room_id: room_sync_config
+                for room_id, room_sync_config in relevant_room_map.items()
+                if room_id in rooms_should_send
             }
 
         @trace