1 files changed, 2 insertions, 2 deletions
diff --git a/synapse/federation/pdu_codec.py b/synapse/federation/pdu_codec.py
index 7e574f451d..991aae2a56 100644
--- a/synapse/federation/pdu_codec.py
+++ b/synapse/federation/pdu_codec.py
@@ -95,8 +95,8 @@ class PduCodec(object):
             if k not in ["event_id", "room_id", "type"]
         })
 
-        if "ts" not in kwargs:
-            kwargs["ts"] = int(self.clock.time_msec())
+        if "origin_server_ts" not in kwargs:
+            kwargs["origin_server_ts"] = int(self.clock.time_msec())
 
         pdu = Pdu(**kwargs)
         pdu = add_event_pdu_content_hash(pdu)