diff --git a/triedb/pathdb/database.go b/triedb/pathdb/database.go
index c281f7dac8..310114b188 100644
--- a/triedb/pathdb/database.go
+++ b/triedb/pathdb/database.go
@@ -153,7 +153,7 @@ type Database struct {
 	readOnly     bool                     // Flag if database is opened in read only mode
 	waitSync     bool                     // Flag if database is deactivated due to initial state sync
 	fastRecovery bool                     // Flag if recover nodebufferlist
-	first        bool                     // Flag if recover nodebufferlist
+	isGenesis    bool                     // Flag if in genesis state
 	bufferSize   int                      // Memory allowance (in bytes) for caching dirty nodes
 	config       *Config                  // Configuration for database
 	diskdb       ethdb.Database           // Persistent storage for matured trie nodes
@@ -183,7 +183,7 @@ func New(diskdb ethdb.Database, config *Config) *Database {
 	// ancient store. Otherwise, all the relevant functionalities are disabled.
 	if ancient, err := diskdb.AncientDatadir(); err == nil && ancient != "" && !db.readOnly {
 		db.fastRecovery = checkAncientAndNodeBuffer(ancient, config.TrieNodeBufferType)
-		db.first = checkFirst(ancient)
+		db.isGenesis = checkGenesis(ancient)
 		freezer, err := rawdb.NewStateFreezer(ancient, false, db.fastRecovery)
 		if err != nil {
 			log.Crit("Failed to open state history freezer", "err", err)
diff --git a/triedb/pathdb/journal.go b/triedb/pathdb/journal.go
index 1bdf046bfa..aa2190afa7 100644
--- a/triedb/pathdb/journal.go
+++ b/triedb/pathdb/journal.go
@@ -269,7 +269,7 @@ func (db *Database) loadLayers() layer {
 	)
 
 	if (errors.Is(err, errMissJournal) || errors.Is(err, errUnmatchedJournal)) && db.fastRecovery &&
-		db.config.TrieNodeBufferType == NodeBufferList && !db.first {
+		db.config.TrieNodeBufferType == NodeBufferList && !db.isGenesis {
 		start := time.Now()
 		if db.freezer == nil {
 			log.Crit("Use unopened freezer db to recover node buffer list")
@@ -277,7 +277,7 @@ func (db *Database) loadLayers() layer {
 		log.Info("Recover node buffer list from ancient db")
 
 		nb, err = NewTrieNodeBuffer(db.diskdb, db.config.TrieNodeBufferType, db.bufferSize, nil, 0,
-			db.config.ProposeBlockInterval, db.config.NotifyKeep, db.freezer, db.fastRecovery, db.first)
+			db.config.ProposeBlockInterval, db.config.NotifyKeep, db.freezer, db.fastRecovery, db.isGenesis)
 		if err != nil {
 			log.Error("Failed to new trie node buffer for recovery", "error", err)
 		} else {
@@ -289,7 +289,7 @@ func (db *Database) loadLayers() layer {
 	if nb == nil || err != nil {
 		// Return single layer with persistent state.
 		nb, err = NewTrieNodeBuffer(db.diskdb, db.config.TrieNodeBufferType, db.bufferSize, nil, 0,
-			db.config.ProposeBlockInterval, db.config.NotifyKeep, nil, false, db.first)
+			db.config.ProposeBlockInterval, db.config.NotifyKeep, nil, false, db.isGenesis)
 		if err != nil {
 			log.Crit("Failed to new trie node buffer", "error", err)
 			return nil
@@ -676,8 +676,8 @@ func flattenTrieNodes(jn []journalNodes) map[common.Hash]map[string]*trienode.No
 }
 
 func checkAncientAndNodeBuffer(ancient string, nodeBufferType NodeBufferType) bool {
-	if !common.FileExist(filepath.Join(ancient, rawdb.StateFreezerName)) {
-		return true
+	if ok := checkGenesis(ancient); ok {
+		return ok
 	}
 
 	if rawdb.DetectTrieNodesFile(ancient) {
@@ -694,7 +694,7 @@ func checkAncientAndNodeBuffer(ancient string, nodeBufferType NodeBufferType) bo
 	return false
 }
 
-func checkFirst(ancient string) bool {
+func checkGenesis(ancient string) bool {
 	if !common.FileExist(filepath.Join(ancient, rawdb.StateFreezerName)) {
 		return true
 	}
diff --git a/triedb/pathdb/nodebufferlist.go b/triedb/pathdb/nodebufferlist.go
index 547b4c3a9f..0fd0a6ff09 100644
--- a/triedb/pathdb/nodebufferlist.go
+++ b/triedb/pathdb/nodebufferlist.go
@@ -463,7 +463,7 @@ func (nf *nodebufferlist) flush(db ethdb.KeyValueStore, clean *fastcache.Cache,
 	if !nf.isGenesis {
 		nf.traverseReverse(commitFunc)
 	} else {
-		nf.forceFlush()
+		nf.flushGenesis()
 	}
 
 	persistID := nf.persistID + nf.base.layers
@@ -662,8 +662,8 @@ func (nf *nodebufferlist) traverseReverse(cb func(*multiDifflayer) bool) {
 	return
 }
 
-// forceFlush is used for init genesis
-func (nf *nodebufferlist) forceFlush() {
+// flushGenesis is used for flush genesis trie node
+func (nf *nodebufferlist) flushGenesis() {
 	commitFunc := func(buffer *multiDifflayer) bool {
 		err := nf.base.commit(buffer.root, buffer.id, buffer.block, buffer.layers, buffer.nodes)
 		if err != nil {