diff --git a/federationapi/routing/send.go b/federationapi/routing/send.go
index 19134c9ee..a146d85bd 100644
--- a/federationapi/routing/send.go
+++ b/federationapi/routing/send.go
@@ -164,7 +164,7 @@ func Send(
 
 	util.GetLogger(httpReq.Context()).Debugf("Received transaction %q from %q containing %d PDUs, %d EDUs", txnID, request.Origin(), len(t.PDUs), len(t.EDUs))
 
-	resp, jsonErr := t.processTransaction(httpReq.Context(), request.Destination())
+	resp, jsonErr := t.processTransaction(httpReq.Context())
 	if jsonErr != nil {
 		util.GetLogger(httpReq.Context()).WithField("jsonErr", jsonErr).Error("t.processTransaction failed")
 		return *jsonErr
@@ -206,7 +206,7 @@ type txnFederationClient interface {
 		roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.RespMissingEvents, err error)
 }
 
-func (t *txnReq) processTransaction(ctx context.Context, virtualHost gomatrixserverlib.ServerName) (*gomatrixserverlib.RespSend, *util.JSONResponse) {
+func (t *txnReq) processTransaction(ctx context.Context) (*gomatrixserverlib.RespSend, *util.JSONResponse) {
 	var wg sync.WaitGroup
 	wg.Add(1)
 	go func() {
diff --git a/federationapi/routing/send_test.go b/federationapi/routing/send_test.go
index ebcbba3e7..b8bfe0221 100644
--- a/federationapi/routing/send_test.go
+++ b/federationapi/routing/send_test.go
@@ -199,7 +199,7 @@ func mustCreateTransaction(rsAPI api.FederationRoomserverAPI, fedClient txnFeder
 }
 
 func mustProcessTransaction(t *testing.T, txn *txnReq, pdusWithErrors []string) {
-	res, err := txn.processTransaction(context.Background(), "localhost")
+	res, err := txn.processTransaction(context.Background())
 	if err != nil {
 		t.Errorf("txn.processTransaction returned an error: %v", err)
 		return