1 files changed, 3 insertions, 3 deletions
diff --git a/synapse/storage/databases/main/receipts.py b/synapse/storage/databases/main/receipts.py
index edeaacd7a6..01a4281301 100644
--- a/synapse/storage/databases/main/receipts.py
+++ b/synapse/storage/databases/main/receipts.py
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 import logging
-from typing import Any, Dict, List, Optional, Tuple
+from typing import Any, Dict, Iterable, List, Optional, Tuple
 
 from twisted.internet import defer
 
@@ -153,12 +153,12 @@ class ReceiptsWorkerStore(SQLBaseStore):
         }
 
     async def get_linearized_receipts_for_rooms(
-        self, room_ids: List[str], to_key: int, from_key: Optional[int] = None
+        self, room_ids: Iterable[str], to_key: int, from_key: Optional[int] = None
     ) -> List[dict]:
         """Get receipts for multiple rooms for sending to clients.
 
         Args:
-            room_id: List of room_ids.
+            room_id: The room IDs to fetch receipts of.
             to_key: Max stream id to fetch receipts up to.
             from_key: Min stream id to fetch receipts from. None fetches
                 from the start.