1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index d46a963bb8..1f71773aaa 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -319,7 +319,7 @@ class RegistrationStore(SQLBaseStore):
 
         defer.returnValue(res if res else False)
 
-    @cachedList(cache=is_guest.cache, list_name="user_ids", num_args=1,
+    @cachedList(cached_method_name="is_guest", list_name="user_ids", num_args=1,
                 inlineCallbacks=True)
     def are_guests(self, user_ids):
         sql = "SELECT name, is_guest FROM users WHERE name IN (%s)" % (