diff --git a/backend/loginFirstTime.php b/backend/loginFirstTime.php
index 06d8fe4..b334120 100644
--- a/backend/loginFirstTime.php
+++ b/backend/loginFirstTime.php
@@ -61,7 +61,7 @@ try {
         'token_type' => 'registration',
         'exp'        => time() + 150, // 150 ثانية
         'iat'        => time(),
-        'iss'        => 'Tripz',
+        'iss'        => getenv('APP_ISSUER') ?: 'Tripz',
         'aud'        => $audience,
         'jti'        => bin2hex(random_bytes(16)),
     ];