diff --git a/lntest/btcd.go b/lntest/btcd.go
index 7187befd..603bb3af 100644
--- a/lntest/btcd.go
+++ b/lntest/btcd.go
@@ -67,7 +67,9 @@ func (b BtcdBackendConfig) Name() string {
 // NewBackend starts a new rpctest.Harness and returns a BtcdBackendConfig for
 // that node. miner should be set to the P2P address of the miner to connect
 // to.
-func NewBackend(miner string) (*BtcdBackendConfig, func(), error) {
+func NewBackend(miner string, netParams *chaincfg.Params) (
+	*BtcdBackendConfig, func(), error) {
+
 	args := []string{
 		"--rejectnonstd",
 		"--txindex",
@@ -76,7 +78,6 @@ func NewBackend(miner string) (*BtcdBackendConfig, func(), error) {
 		"--logdir=" + logDir,
 		"--connect=" + miner,
 	}
-	netParams := &chaincfg.SimNetParams
 	chainBackend, err := rpctest.New(netParams, nil, args)
 	if err != nil {
 		return nil, nil, fmt.Errorf("unable to create btcd node: %v", err)
diff --git a/lntest/itest/lnd_test.go b/lntest/itest/lnd_test.go
index 4ee67480..90a8523b 100644
--- a/lntest/itest/lnd_test.go
+++ b/lntest/itest/lnd_test.go
@@ -45,7 +45,7 @@ import (
 )
 
 var (
-	harnessNetParams = &chaincfg.SimNetParams
+	harnessNetParams = &chaincfg.RegressionNetParams
 )
 
 const (
@@ -14415,7 +14415,9 @@ func TestLightningNetworkDaemon(t *testing.T) {
 	}()
 
 	// Start a chain backend.
-	chainBackend, cleanUp, err := lntest.NewBackend(miner.P2PAddress())
+	chainBackend, cleanUp, err := lntest.NewBackend(
+		miner.P2PAddress(), harnessNetParams,
+	)
 	if err != nil {
 		ht.Fatalf("unable to start backend: %v", err)
 	}
@@ -14454,7 +14456,7 @@ func TestLightningNetworkDaemon(t *testing.T) {
 
 	// Next mine enough blocks in order for segwit and the CSV package
 	// soft-fork to activate on SimNet.
-	numBlocks := chaincfg.SimNetParams.MinerConfirmationWindow * 2
+	numBlocks := harnessNetParams.MinerConfirmationWindow * 2
 	if _, err := miner.Node.Generate(numBlocks); err != nil {
 		ht.Fatalf("unable to generate blocks: %v", err)
 	}
diff --git a/lntest/neutrino.go b/lntest/neutrino.go
index d127c0b5..a8275fc6 100644
--- a/lntest/neutrino.go
+++ b/lntest/neutrino.go
@@ -2,7 +2,11 @@
 
 package lntest
 
-import "fmt"
+import (
+	"fmt"
+
+	"github.com/btcsuite/btcd/chaincfg"
+)
 
 // NeutrinoBackendConfig is an implementation of the BackendConfig interface
 // backed by a neutrino node.
@@ -35,7 +39,9 @@ func (b NeutrinoBackendConfig) Name() string {
 }
 
 // NewBackend starts and returns a NeutrinoBackendConfig for the node.
-func NewBackend(miner string) (*NeutrinoBackendConfig, func(), error) {
+func NewBackend(miner string, _ *chaincfg.Params) (
+	*NeutrinoBackendConfig, func(), error) {
+
 	bd := &NeutrinoBackendConfig{
 		minerAddr: miner,
 	}