diff --git a/README.md b/README.md
index f47856f..39021b5 100644
--- a/README.md
+++ b/README.md
@@ -25,16 +25,16 @@ An example config file:
 ```toml
 [leveldb]
     # LevelDB access mode <local | remote>
-    mode = "local"  # LVLDB_MODE
+    mode = "local"  # LEVELDB_MODE
 
     # in local mode
     # LevelDB paths
-    path    = "/Users/user/Library/Ethereum/geth/chaindata"         # LVLDB_PATH
-    ancient = "/Users/user/Library/Ethereum/geth/chaindata/ancient" # LVLDB_ANCIENT
+    path    = "/Users/user/Library/Ethereum/geth/chaindata"         # LEVELDB_PATH
+    ancient = "/Users/user/Library/Ethereum/geth/chaindata/ancient" # LEVELDB_ANCIENT
 
     # in remote mode
     # URL for leveldb-ethdb-rpc endpoint
-    url = "http://127.0.0.1:8082/"  # LVLDB_URL
+    url = "http://127.0.0.1:8082/"  # LEVELDB_URL
 
 [server]
     ipcPath  = ".ipc"           # SERVICE_IPC_PATH
diff --git a/cmd/env.go b/cmd/env.go
index 766378b..42ba796 100644
--- a/cmd/env.go
+++ b/cmd/env.go
@@ -30,10 +30,10 @@ const (
 
 	DB_CACHE_SIZE_MB   = "DB_CACHE_SIZE_MB"
 	TRIE_CACHE_SIZE_MB = "TRIE_CACHE_SIZE_MB"
-	LVLDB_MODE         = "LVLDB_MODE"
-	LVLDB_PATH         = "LVLDB_PATH"
-	LVLDB_ANCIENT      = "LVLDB_ANCIENT"
-	LVLDB_URL          = "LVLDB_URL"
+	LEVELDB_MODE       = "LEVELDB_MODE"
+	LEVELDB_PATH       = "LEVELDB_PATH"
+	LEVELDB_ANCIENT    = "LEVELDB_ANCIENT"
+	LEVELDB_URL        = "LEVELDB_URL"
 
 	STATEDIFF_PRERUN            = "STATEDIFF_PRERUN"
 	STATEDIFF_TRIE_WORKERS      = "STATEDIFF_TRIE_WORKERS"
@@ -119,10 +119,10 @@ func init() {
 	viper.BindEnv("cache.database", DB_CACHE_SIZE_MB)
 	viper.BindEnv("cache.trie", TRIE_CACHE_SIZE_MB)
 
-	viper.BindEnv("leveldb.mode", LVLDB_MODE)
-	viper.BindEnv("leveldb.path", LVLDB_PATH)
-	viper.BindEnv("leveldb.ancient", LVLDB_ANCIENT)
-	viper.BindEnv("leveldb.url", LVLDB_URL)
+	viper.BindEnv("leveldb.mode", LEVELDB_MODE)
+	viper.BindEnv("leveldb.path", LEVELDB_PATH)
+	viper.BindEnv("leveldb.ancient", LEVELDB_ANCIENT)
+	viper.BindEnv("leveldb.url", LEVELDB_URL)
 
 	viper.BindEnv("prom.metrics", PROM_METRICS)
 	viper.BindEnv("prom.http", PROM_HTTP)