diff --git a/cmd/util.go b/cmd/util.go
index b193e67..4fd3967 100644
--- a/cmd/util.go
+++ b/cmd/util.go
@@ -119,7 +119,6 @@ func createReader() (pkg.Reader, *params.ChainConfig, node.Info) {
 			},
 		},
 		ChainConfig: chainConf,
-		// Mode:        mode,
 		Path:        path,
 		AncientPath: ancientPath,
 		Url:         url,
diff --git a/pkg/reader.go b/pkg/reader.go
index ec87401..3181543 100644
--- a/pkg/reader.go
+++ b/pkg/reader.go
@@ -47,9 +47,8 @@ type EthDBReader struct {
 }
 
 type EthDBReaderConfig struct {
-	TrieConfig  *triedb.Config
-	ChainConfig *params.ChainConfig
-	// Mode                   string
+	TrieConfig             *triedb.Config
+	ChainConfig            *params.ChainConfig
 	Path, AncientPath, Url string
 	DBCacheSize            int
 }
@@ -57,7 +56,6 @@ type EthDBReaderConfig struct {
 // NewEthDBReader creates a new Reader using LevelDB
 func NewEthDBReader(conf EthDBReaderConfig) (*EthDBReader, error) {
 	opts := rawdb.OpenOptions{
-		// Type:              conf.Mode,
 		Directory:         conf.Path,
 		AncientsDirectory: conf.AncientPath,
 		Namespace:         "eth-statediff-service",