diff --git a/contractcourt/chain_watcher_test.go b/contractcourt/chain_watcher_test.go
index 981fdf2c..a99fcd31 100644
--- a/contractcourt/chain_watcher_test.go
+++ b/contractcourt/chain_watcher_test.go
@@ -36,7 +36,7 @@ func (m *mockNotifier) Stop() error {
 	return nil
 }
 func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint,
-	heightHint uint32, _ bool) (*chainntnfs.SpendEvent, error) {
+	heightHint uint32) (*chainntnfs.SpendEvent, error) {
 	return &chainntnfs.SpendEvent{
 		Spend:  m.spendChan,
 		Cancel: func() {},
diff --git a/discovery/gossiper_test.go b/discovery/gossiper_test.go
index 9ecf69f5..b3880c08 100644
--- a/discovery/gossiper_test.go
+++ b/discovery/gossiper_test.go
@@ -263,8 +263,8 @@ func (m *mockNotifier) RegisterConfirmationsNtfn(txid *chainhash.Hash,
 	return nil, nil
 }
 
-func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint, _ uint32,
-	_ bool) (*chainntnfs.SpendEvent, error) {
+func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint,
+	_ uint32) (*chainntnfs.SpendEvent, error) {
 	return nil, nil
 }
 
diff --git a/fundingmanager_test.go b/fundingmanager_test.go
index 163b64aa..7550db4c 100644
--- a/fundingmanager_test.go
+++ b/fundingmanager_test.go
@@ -126,7 +126,7 @@ func (m *mockNotifier) Stop() error {
 }
 
 func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint,
-	heightHint uint32, _ bool) (*chainntnfs.SpendEvent, error) {
+	heightHint uint32) (*chainntnfs.SpendEvent, error) {
 	return &chainntnfs.SpendEvent{
 		Spend:  make(chan *chainntnfs.SpendDetail),
 		Cancel: func() {},
diff --git a/htlcswitch/mock.go b/htlcswitch/mock.go
index fb648ac2..b3bcbdb1 100644
--- a/htlcswitch/mock.go
+++ b/htlcswitch/mock.go
@@ -801,7 +801,7 @@ func (m *mockNotifier) Stop() error {
 }
 
 func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint,
-	heightHint uint32, mempool bool) (*chainntnfs.SpendEvent, error) {
+	heightHint uint32) (*chainntnfs.SpendEvent, error) {
 
 	return &chainntnfs.SpendEvent{
 		Spend: make(chan *chainntnfs.SpendDetail),
diff --git a/mock.go b/mock.go
index 405eaea0..e7b41828 100644
--- a/mock.go
+++ b/mock.go
@@ -106,7 +106,7 @@ func (m *mockNotfier) Stop() error {
 	return nil
 }
 func (m *mockNotfier) RegisterSpendNtfn(outpoint *wire.OutPoint,
-	heightHint uint32, _ bool) (*chainntnfs.SpendEvent, error) {
+	heightHint uint32) (*chainntnfs.SpendEvent, error) {
 	return &chainntnfs.SpendEvent{
 		Spend:  make(chan *chainntnfs.SpendDetail),
 		Cancel: func() {},
@@ -131,7 +131,7 @@ func makeMockSpendNotifier() *mockSpendNotifier {
 }
 
 func (m *mockSpendNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint,
-	heightHint uint32, _ bool) (*chainntnfs.SpendEvent, error) {
+	heightHint uint32) (*chainntnfs.SpendEvent, error) {
 	m.mtx.Lock()
 	defer m.mtx.Unlock()