diff --git a/htlcswitch/circuit_test.go b/htlcswitch/circuit_test.go
index 42653dd3..d908a935 100644
--- a/htlcswitch/circuit_test.go
+++ b/htlcswitch/circuit_test.go
@@ -82,15 +82,8 @@ func initTestExtracter() {
 // newOnionProcessor creates starts a new htlcswitch.OnionProcessor using a temp
 // db and no garbage collection.
 func newOnionProcessor(t *testing.T) *htlcswitch.OnionProcessor {
-	sharedSecretFile, err := ioutil.TempFile("", "sphinxreplay.db")
-	if err != nil {
-		t.Fatalf("unable to create temp path: %v", err)
-	}
-
-	sharedSecretPath := sharedSecretFile.Name()
-
 	sphinxRouter := sphinx.NewRouter(
-		sharedSecretPath, sphinxPrivKey, &bitcoinCfg.SimNetParams, nil,
+		sphinxPrivKey, &bitcoinCfg.SimNetParams, sphinx.NewMemoryReplayLog(),
 	)
 
 	if err := sphinxRouter.Start(); err != nil {
diff --git a/server.go b/server.go
index c0b6ea4f..6bce1304 100644
--- a/server.go
+++ b/server.go
@@ -16,12 +16,14 @@ import (
 	"time"
 
 	"github.com/coreos/bbolt"
+	"github.com/go-errors/errors"
 	"github.com/lightningnetwork/lightning-onion"
 	"github.com/lightningnetwork/lnd/autopilot"
 	"github.com/lightningnetwork/lnd/brontide"
 	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/contractcourt"
 	"github.com/lightningnetwork/lnd/discovery"
+	"github.com/lightningnetwork/lnd/htlcswitch"
 	"github.com/lightningnetwork/lnd/lnrpc"
 	"github.com/lightningnetwork/lnd/lnwallet"
 	"github.com/lightningnetwork/lnd/lnwire"
@@ -31,9 +33,6 @@ import (
 	"github.com/roasbeef/btcd/connmgr"
 	"github.com/roasbeef/btcd/wire"
 	"github.com/roasbeef/btcutil"
-
-	"github.com/go-errors/errors"
-	"github.com/lightningnetwork/lnd/htlcswitch"
 )
 
 var (
@@ -159,9 +158,8 @@ func newServer(listenAddrs []string, chanDB *channeldb.DB, cc *chainControl,
 	// the same directory as the channel graph database.
 	graphDir := chanDB.Path()
 	sharedSecretPath := filepath.Join(graphDir, "sphinxreplay.db")
-	sphinxRouter := sphinx.NewRouter(
-		sharedSecretPath, privKey, activeNetParams.Params, cc.chainNotifier,
-	)
+	replayLog := htlcswitch.NewDecayedLog(sharedSecretPath, cc.chainNotifier)
+	sphinxRouter := sphinx.NewRouter(privKey, activeNetParams.Params, replayLog)
 
 	s := &server{
 		chanDB: chanDB,