diff --git a/README.md b/README.md
index 0da4652..316eebd 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ docker-compose up
 | `SMTP_PASSWORD`             | The SMTP user password                                                                                                                                       | N/A                                |
 | `SMTP_AUTH_TYPE`            | The SMTP authentication type. Possible values: `PLAIN`, `LOGIN`, `NONE`                                                                                      | `NONE`                             |
 | `SMTP_ENCRYPTION`           | the encryption method. Possible values: `NONE`, `SSL`, `SSLTLS`, `TLS`, `STARTTLS`                                                                           | `STARTTLS`                         |
-
+| `WG_DATABASE_PATH`          | The path to database where stores all WG data                                                                                                                | `/etc/wireguard/db`                      |
 ### Defaults for server configuration
 
 These environment variables are used to control the default server settings used when initializing the database.
diff --git a/main.go b/main.go
index 0131208..f69d0e6 100644
--- a/main.go
+++ b/main.go
@@ -41,6 +41,7 @@ var (
 	flagSessionSecret  string = util.RandomString(32)
 	flagWgConfTemplate string
 	flagBasePath       string
+	flagDBPath         string = "/etc/wireguard/db"
 )
 
 const (
@@ -80,6 +81,7 @@ func init() {
 	flag.StringVar(&flagSessionSecret, "session-secret", util.LookupEnvOrString("SESSION_SECRET", flagSessionSecret), "The key used to encrypt session cookies.")
 	flag.StringVar(&flagWgConfTemplate, "wg-conf-template", util.LookupEnvOrString("WG_CONF_TEMPLATE", flagWgConfTemplate), "Path to custom wg.conf template.")
 	flag.StringVar(&flagBasePath, "base-path", util.LookupEnvOrString("BASE_PATH", flagBasePath), "The base path of the URL")
+	flag.StringVar(&flagDBPath, "database-path", util.LookupEnvOrString("WG_DATABASE_PATH", flagDBPath), "The custom path to database.")
 	flag.Parse()
 
 	// update runtime config
@@ -120,7 +122,7 @@ func init() {
 }
 
 func main() {
-	db, err := jsondb.New("./db")
+	db, err := jsondb.New(flagDBPath)
 	if err != nil {
 		panic(err)
 	}