diff --git a/accounts/settings.py b/accounts/settings.py
index 44bcade..27437f7 100644
--- a/accounts/settings.py
+++ b/accounts/settings.py
@@ -269,6 +269,7 @@ PAYAM_SMS_USERNAME = config('PAYAM_SMS_USERNAME')
 PAYAM_SMS_PASSWORD = config('PAYAM_SMS_PASSWORD')
 PAYAM_SMS_CLIENT_ID = config('PAYAM_SMS_CLIENT_ID')
 PAYAM_SMS_CLIENT_SECRET = config('PAYAM_SMS_CLIENT_SECRET')
+SMS_OTP_SIGNITURE = config('SMS_OTP_SIGNITURE', '')
 
 
 CACHES = {
diff --git a/apps/users/models.py b/apps/users/models.py
index 23283c9..b57ecf9 100644
--- a/apps/users/models.py
+++ b/apps/users/models.py
@@ -224,7 +224,7 @@ class User(AbstractUser):
         self.notify(body=str(self.otp), title='OTP')
 
     def notify(self, body, title=None, notification_type='sms'):
-        message = "رمزیکبارمصرف: " + body + '\n qAoVML7kJEr'
+        message = f"رمزیکبارمصرف: {body}\n {settings.SMS_OTP_SIGNITURE}"
         send_sms(self.phone_number.strip('+'), message)
         return
         # TODO: enable celery