diff --git a/includes/packages/PHPMailer/PHPMailerAutoload.php b/includes/packages/PHPMailer/PHPMailerAutoload.php
index eaa2e303..44ffcf6a 100644
--- a/includes/packages/PHPMailer/PHPMailerAutoload.php
+++ b/includes/packages/PHPMailer/PHPMailerAutoload.php
@@ -42,7 +42,7 @@ function PHPMailerAutoload($classname)
      * Fall back to traditional autoload for old PHP versions
      * @param string $classname The name of the class to load
      */
-    function __autoload($classname)
+    function spl_autoload_register($classname)
     {
         PHPMailerAutoload($classname);
     }