diff --git a/htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/SpoofCheckValidation.php b/htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/SpoofCheckValidation.php
index dd270556e8a..4721f0d8c98 100644
--- a/htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/SpoofCheckValidation.php
+++ b/htdocs/includes/swiftmailer/egulias/email-validator/EmailValidator/Validation/SpoofCheckValidation.php
@@ -13,10 +13,10 @@ class SpoofCheckValidation implements EmailValidation
      * @var InvalidEmail
      */
     private $error;
-    
+
     public function __construct()
     {
-        if (!class_exists(Spoofchecker::class)) {
+        if (!extension_loaded('intl')) {
             throw new \LogicException(sprintf('The %s class requires the Intl extension.', __CLASS__));
         }
     }