diff --git a/controllers/admin/AdminEmailsController.php b/controllers/admin/AdminEmailsController.php
index 8fcbbaddf..20b5affd3 100644
--- a/controllers/admin/AdminEmailsController.php
+++ b/controllers/admin/AdminEmailsController.php
@@ -202,7 +202,7 @@ class AdminEmailsControllerCore extends AdminController
 		if (isset($_POST['PS_SHOP_EMAIL']))
 			$_POST['PS_SHOP_EMAIL'] = Configuration::get('PS_SHOP_EMAIL');
 
-		if ($_POST['PS_MAIL_METHOD'] == 2 && (empty($_POST['PS_MAIL_SERVER']) || empty($_POST['PS_MAIL_SMTP_PORT'])))
+		if (isset($_POST['PS_MAIL_METHOD']) && $_POST['PS_MAIL_METHOD'] == 2 && (empty($_POST['PS_MAIL_SERVER']) || empty($_POST['PS_MAIL_SMTP_PORT'])))
 			$this->errors[] = Tools::displayError('You must define an SMTP server and an SMTP port. If you do not know, use the PHP mail() function instead.');
 	}