1 files changed, 2 insertions, 2 deletions
diff --git a/synapse/storage/databases/main/devices.py b/synapse/storage/databases/main/devices.py
index c9346de316..fd87ba71ab 100644
--- a/synapse/storage/databases/main/devices.py
+++ b/synapse/storage/databases/main/devices.py
@@ -665,7 +665,7 @@ class DeviceWorkerStore(SQLBaseStore):
         cached_method_name="get_device_list_last_stream_id_for_remote",
         list_name="user_ids",
     )
-    async def get_device_list_last_stream_id_for_remotes(self, user_ids: str):
+    async def get_device_list_last_stream_id_for_remotes(self, user_ids: Iterable[str]):
         rows = await self.db_pool.simple_select_many_batch(
             table="device_lists_remote_extremeties",
             column="user_id",
@@ -1053,7 +1053,7 @@ class DeviceStore(DeviceWorkerStore, DeviceBackgroundUpdateStore):
         # Map of (user_id, device_id) -> bool. If there is an entry that implies
         # the device exists.
         self.device_id_exists_cache = LruCache(
-            cache_name="device_id_exists", keylen=2, max_size=10000
+            cache_name="device_id_exists", max_size=10000
         )
 
     async def store_device(