diff --git a/configs/config.go b/configs/config.go
index a10ecef..3dc46d5 100644
--- a/configs/config.go
+++ b/configs/config.go
@@ -20,24 +20,24 @@ type trainConfig struct {
 
 // MuffinConfig for Muffin bot
 type MuffinConfig struct {
-	Bot         botConfig
-	Train       trainConfig
-	DatabaseURL string
-	DBName      string
+	Bot          botConfig
+	Train        trainConfig
+	DatabaseURL  string
+	DatabaseName string
 }
 
-func loadConfig() *MuffinConfig {
-	godotenv.Load()
-	config := &MuffinConfig{Bot: botConfig{}, Train: trainConfig{}}
-	setConfig(config)
+var Config *MuffinConfig
 
-	return config
+func init() {
+	godotenv.Load()
+	Config = &MuffinConfig{Bot: botConfig{}, Train: trainConfig{}}
+	setConfig(Config)
 }
 
 func getRequiredValue(key string) string {
 	value := os.Getenv(key)
 	if value == "" {
-		log.Fatalln(fmt.Sprintf("[goMuffin] .env 파일에서 필요한 %s값이 없어요.", key))
+		log.Fatalln(fmt.Sprintf("[goMuffin] .env 파일에서 필요한 '%s'값이 없어요.", key))
 	}
 	return value
 }
@@ -54,7 +54,5 @@ func setConfig(config *MuffinConfig) {
 	config.Train.UserID = getValue("TRAIN_USER_ID")
 
 	config.DatabaseURL = getRequiredValue("DATABASE_URL")
-	config.DBName = getRequiredValue("DATABASE_NAME")
+	config.DatabaseName = getRequiredValue("DATABASE_NAME")
 }
-
-var Config *MuffinConfig = loadConfig()
diff --git a/databases/database.go b/databases/database.go
index 7928bdc..26a6607 100644
--- a/databases/database.go
+++ b/databases/database.go
@@ -32,7 +32,7 @@ func Connect() (*MuffinDatabase, error) {
 	}
 	return &MuffinDatabase{
 		Client: client,
-		Learns: client.Database(configs.Config.DBName).Collection("learn"),
-		Texts:  client.Database(configs.Config.DBName).Collection("text"),
+		Learns: client.Database(configs.Config.DatabaseName).Collection("learn"),
+		Texts:  client.Database(configs.Config.DatabaseName).Collection("text"),
 	}, nil
 }
diff --git a/scripts/dbMigrate.go b/scripts/dbMigrate.go
index 60f8192..f06569c 100644
--- a/scripts/dbMigrate.go
+++ b/scripts/dbMigrate.go
@@ -23,7 +23,7 @@ var wg sync.WaitGroup
 func DBMigrate(n *commando.Node) error {
 	mariaURL := os.Getenv("PREVIOUS_DATABASE_URL")
 	mongoURL := configs.Config.DatabaseURL
-	dbName := configs.Config.DBName
+	dbName := configs.Config.DatabaseName
 
 	dbConnectionQuery := "?parseTime=true"