diff --git a/core/maingate.go b/core/maingate.go
index c8c7f36..029cab7 100644
--- a/core/maingate.go
+++ b/core/maingate.go
@@ -218,17 +218,19 @@ func New(ctx context.Context) (*Maingate, error) {
 		return nil, err
 	}
 
-	opt := option.WithCredentialsFile(mg.FirebaseAdminSDKCredentialFile)
-	firebaseApp, err := firebase.NewApp(context.Background(), nil, opt)
-	if err != nil {
-		logger.Error("firebase admin error initializing app failed :", err)
-		return nil, err
-	}
+	if !*flag.Noauth {
+		opt := option.WithCredentialsFile(mg.FirebaseAdminSDKCredentialFile)
+		firebaseApp, err := firebase.NewApp(context.Background(), nil, opt)
+		if err != nil {
+			logger.Error("firebase admin error initializing app failed :", err)
+			return nil, err
+		}
 
-	mg.firebaseAppContext = ctx
-	mg.firebaseAppClient, err = firebaseApp.Auth(mg.firebaseAppContext)
-	if err != nil {
-		logger.Println("FirebaseAppClient error getting Auth client:", err)
+		mg.firebaseAppContext = ctx
+		mg.firebaseAppClient, err = firebaseApp.Auth(mg.firebaseAppContext)
+		if err != nil {
+			logger.Println("FirebaseAppClient error getting Auth client:", err)
+		}
 	}
 
 	return &mg, nil