diff --git a/api/accounts/accounts.go b/api/accounts/accounts.go
index 2ef14ca87..a6d1df3ee 100644
--- a/api/accounts/accounts.go
+++ b/api/accounts/accounts.go
@@ -31,7 +31,7 @@ type Accounts struct {
 	stater       *state.Stater
 	callGasLimit uint64
 	forkConfig   thor.ForkConfig
-	bft          bft.CommitLevel
+	bft          bft.Committer
 }
 
 func New(
@@ -39,7 +39,7 @@ func New(
 	stater *state.Stater,
 	callGasLimit uint64,
 	forkConfig thor.ForkConfig,
-	bft bft.CommitLevel,
+	bft bft.Committer,
 ) *Accounts {
 	return &Accounts{
 		repo,
diff --git a/api/api.go b/api/api.go
index 9f425f66a..c63573764 100644
--- a/api/api.go
+++ b/api/api.go
@@ -38,7 +38,7 @@ func New(
 	stater *state.Stater,
 	txPool *txpool.TxPool,
 	logDB *logdb.LogDB,
-	bft bft.CommitLevel,
+	bft bft.Committer,
 	nw node.Network,
 	forkConfig thor.ForkConfig,
 	allowedOrigins string,
diff --git a/api/blocks/blocks.go b/api/blocks/blocks.go
index c3183a4c5..bddb3ac12 100644
--- a/api/blocks/blocks.go
+++ b/api/blocks/blocks.go
@@ -19,10 +19,10 @@ import (
 
 type Blocks struct {
 	repo *chain.Repository
-	bft  bft.CommitLevel
+	bft  bft.Committer
 }
 
-func New(repo *chain.Repository, bft bft.CommitLevel) *Blocks {
+func New(repo *chain.Repository, bft bft.Committer) *Blocks {
 	return &Blocks{
 		repo,
 		bft,
diff --git a/api/debug/debug.go b/api/debug/debug.go
index f006be28b..bcdb32950 100644
--- a/api/debug/debug.go
+++ b/api/debug/debug.go
@@ -44,10 +44,10 @@ type Debug struct {
 	forkConfig        thor.ForkConfig
 	callGasLimit      uint64
 	allowCustomTracer bool
-	bft               bft.CommitLevel
+	bft               bft.Committer
 }
 
-func New(repo *chain.Repository, stater *state.Stater, forkConfig thor.ForkConfig, callGaslimit uint64, allowCustomTracer bool, bft bft.CommitLevel) *Debug {
+func New(repo *chain.Repository, stater *state.Stater, forkConfig thor.ForkConfig, callGaslimit uint64, allowCustomTracer bool, bft bft.Committer) *Debug {
 	return &Debug{
 		repo,
 		stater,
diff --git a/api/utils/revisions.go b/api/utils/revisions.go
index 86ad78371..61675aebe 100644
--- a/api/utils/revisions.go
+++ b/api/utils/revisions.go
@@ -72,7 +72,7 @@ func ParseRevision(revision string, allowNext bool) (*Revision, error) {
 
 // GetSummary returns the block summary for the given revision,
 // revision required to be a deterministic block other than "next".
-func GetSummary(rev *Revision, repo *chain.Repository, bft bft.CommitLevel) (sum *chain.BlockSummary, err error) {
+func GetSummary(rev *Revision, repo *chain.Repository, bft bft.Committer) (sum *chain.BlockSummary, err error) {
 	var id thor.Bytes32
 	switch rev := rev.val.(type) {
 	case thor.Bytes32:
@@ -104,7 +104,7 @@ func GetSummary(rev *Revision, repo *chain.Repository, bft bft.CommitLevel) (sum
 
 // GetSummaryAndState returns the block summary and state for the given revision,
 // this function supports the "next" revision.
-func GetSummaryAndState(rev *Revision, repo *chain.Repository, bft bft.CommitLevel, stater *state.Stater) (*chain.BlockSummary, *state.State, error) {
+func GetSummaryAndState(rev *Revision, repo *chain.Repository, bft bft.Committer, stater *state.Stater) (*chain.BlockSummary, *state.State, error) {
 	if rev.IsNext() {
 		best := repo.BestBlockSummary()
 
diff --git a/bft/engine.go b/bft/engine.go
index faeca3acb..a89dc399b 100644
--- a/bft/engine.go
+++ b/bft/engine.go
@@ -26,7 +26,7 @@ const dataStoreName = "bft.engine"
 var finalizedKey = []byte("finalized")
 var justifiedKey = []byte("justified")
 
-type CommitLevel interface {
+type Committer interface {
 	Finalized() thor.Bytes32
 	Justified() thor.Bytes32
 }