diff --git a/backend/factory/config.go b/backend/factory/config.go
index 796314f76f6a84093046c7497e31dab8a63e0f44..a4dd3c9f7ad1b184afb735ec96af242242270041 100644
--- a/backend/factory/config.go
+++ b/backend/factory/config.go
@@ -64,7 +64,7 @@ type Tls struct {
 }
 
 type BillingServer struct {
-	Enable     bool   `yaml:"enable" valid:"type(bool), default(true)"`
+	Enable     bool   `yaml:"enable,omitempty" valid:"required,type(bool)"`
 	HostIPv4   string `yaml:"hostIPv4,omitempty" valid:"required,host"`
 	Port       int    `yaml:"port,omitempty" valid:"optional,port"`
 	ListenPort int    `yaml:"listenPort,omitempty" valid:"required,port"`