diff --git a/override/controllers/AuthController.php b/override/controllers/AuthController.php
index e0d25305..31980d69 100755
--- a/override/controllers/AuthController.php
+++ b/override/controllers/AuthController.php
@@ -114,7 +114,7 @@ class AuthController extends AuthControllerCore
 			if (Tools::getValue('guest_email') !== false) {
 			    $email = Tools::getValue('guest_email');
 			}
-			$email = trim($email);
+			$email = strtolower(trim($email));
 
 			/** @Override Antadis - mail fixing */
 			$email = str_replace(array('@hotmil.','@htmail.','@hotmal.','@hotml.','@hotmai.'),'@hotmail.', $email);