diff --git a/federationapi/routing/backfill.go b/federationapi/routing/backfill.go
index d996db6a3..5c6b0087f 100644
--- a/federationapi/routing/backfill.go
+++ b/federationapi/routing/backfill.go
@@ -17,11 +17,11 @@ package routing
 import (
 	"net/http"
 	"strconv"
+	"time"
 
 	"github.com/matrix-org/dendrite/clientapi/httputil"
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/common/config"
-	"github.com/matrix-org/dendrite/federationapi/types"
 	"github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
@@ -90,9 +90,11 @@ func Backfill(
 		}
 	}
 
-	txn := types.NewTransaction()
-	txn.Origin = cfg.Matrix.ServerName
-	txn.PDUs = evs
+	txn := gomatrixserverlib.Transaction{
+		Origin:         cfg.Matrix.ServerName,
+		PDUs:           evs,
+		OriginServerTS: gomatrixserverlib.AsTimestamp(time.Now()),
+	}
 
 	// Send the events to the client.
 	return util.JSONResponse{
diff --git a/federationapi/types/types.go b/federationapi/types/types.go
deleted file mode 100644
index 24838d547..000000000
--- a/federationapi/types/types.go
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright 2018 New Vector Ltd
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package types
-
-import (
-	"time"
-
-	"github.com/matrix-org/gomatrixserverlib"
-)
-
-// Transaction is the representation of a transaction from the federation API
-// See https://matrix.org/docs/spec/server_server/unstable.html for more info.
-type Transaction struct {
-	// The server_name of the homeserver sending this transaction.
-	Origin gomatrixserverlib.ServerName `json:"origin"`
-	// POSIX timestamp in milliseconds on originating homeserver when this
-	// transaction started.
-	OriginServerTS int64 `json:"origin_server_ts"`
-	// List of persistent updates to rooms.
-	PDUs []gomatrixserverlib.Event `json:"pdus"`
-}
-
-// NewTransaction sets the timestamp of a new transaction instance and then
-// returns the said instance.
-func NewTransaction() Transaction {
-	// Retrieve the current timestamp in nanoseconds and make it a milliseconds
-	// one.
-	ts := time.Now().UnixNano() / int64(time.Millisecond)
-
-	return Transaction{OriginServerTS: ts}
-}