diff --git a/backend/auth/otp/request.php b/backend/auth/otp/request.php
index d212686..f136db2 100644
--- a/backend/auth/otp/request.php
+++ b/backend/auth/otp/request.php
@@ -99,12 +99,12 @@ switch (strtolower($country)) {
         
     case 'syria':
         // Syria uses Nabeh
-        $sentSuccessfully = sendNabehOtp($receiver, $otp, $method, $user_type);
+        $sentSuccessfully = sendNabehOtp($receiver, $otp, $method ?? '', $user_type ?? 'passenger');
         break;
         
     case 'jordan':
         // Jordan uses Nabeh
-        $sentSuccessfully = sendNabehOtp($receiver, $otp, $method, $user_type);
+        $sentSuccessfully = sendNabehOtp($receiver, $otp, $method ?? '', $user_type ?? 'passenger');
         break;
         
     default:
@@ -112,7 +112,7 @@ switch (strtolower($country)) {
         $sentSuccessfully = sendKazumiSms($receiver, $otp);
         if (!$sentSuccessfully) {
             error_log("⚠️ [Default OTP Failover] Kazumi SMS failed. Falling back to Nabeh OTP.");
-            $sentSuccessfully = sendNabehOtp($receiver, $otp, $method, $user_type);
+            $sentSuccessfully = sendNabehOtp($receiver, $otp, $method ?? '', $user_type ?? 'passenger');
         }
         break;
 }