diff --git a/federationapi/routing/send.go b/federationapi/routing/send.go
index 690372414..51ccf6c96 100644
--- a/federationapi/routing/send.go
+++ b/federationapi/routing/send.go
@@ -456,7 +456,7 @@ func (t *txnReq) processEventWithMissingState(ctx context.Context, e gomatrixser
 	// pass the event along with the state to the roomserver using a background context so we don't
 	// needlessly expire
 	headeredEvent := e.Headered(roomVersion)
-	return api.SendEventWithState(context.Background(), t.rsAPI, resolvedState, headeredEvent, t.haveEventIDs(), roomVersion)
+	return api.SendEventWithState(context.Background(), t.rsAPI, resolvedState, headeredEvent, t.haveEventIDs())
 }
 
 // lookupStateAfterEvent returns the room state after `eventID`, which is the state before eventID with the state of `eventID` (if it's a state event)