1 files changed, 5 insertions, 2 deletions
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 925eb5376e..692c2d8a7b 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -285,7 +285,7 @@ class FederationHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def on_event_auth(self, event_id):
-        auth = yield self.store.get_auth_chain(event_id)
+        auth = yield self.store.get_auth_chain([event_id])
 
         for event in auth:
             event.signatures.update(
@@ -494,7 +494,10 @@ class FederationHandler(BaseHandler):
 
         yield self.replication_layer.send_pdu(new_pdu)
 
-        auth_chain = yield self.store.get_auth_chain(event.event_id)
+        state_ids = [e.event_id for e in event.state_events.values()]
+        auth_chain = yield self.store.get_auth_chain(set(
+            [event.event_id] + state_ids
+        ))
 
         defer.returnValue({
             "state": event.state_events.values(),