1 files changed, 2 insertions, 2 deletions
diff --git a/synapse/state/__init__.py b/synapse/state/__init__.py
index 1fa3b280b4..84f59c7d85 100644
--- a/synapse/state/__init__.py
+++ b/synapse/state/__init__.py
@@ -783,7 +783,7 @@ class StateResolutionStore:
         )
 
     def get_auth_chain_difference(
-        self, state_sets: List[Set[str]]
+        self, room_id: str, state_sets: List[Set[str]]
     ) -> Awaitable[Set[str]]:
         """Given sets of state events figure out the auth chain difference (as
         per state res v2 algorithm).
@@ -796,4 +796,4 @@ class StateResolutionStore:
             An awaitable that resolves to a set of event IDs.
         """
 
-        return self.store.get_auth_chain_difference(state_sets)
+        return self.store.get_auth_chain_difference(room_id, state_sets)