1 files changed, 2 insertions, 2 deletions
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py
index 35a01eecca..2b91f93e09 100644
--- a/synapse/federation/federation_server.py
+++ b/synapse/federation/federation_server.py
@@ -231,8 +231,8 @@ class FederationServer(FederationBase):
         )
 
         defer.returnValue((200, {
-            "pdus": [pdu.event_id for pdu in pdus],
-            "auth_chain": [pdu.event_id for pdu in auth_chain],
+            "pdu_ids": [pdu.event_id for pdu in pdus],
+            "auth_chain_ids": [pdu.event_id for pdu in auth_chain],
         }))
 
     @defer.inlineCallbacks