diff --git a/phpBB/phpbb/exception/exception_interface.php b/phpBB/phpbb/exception/exception_interface.php
index e8526a35f5..a7593138f5 100644
--- a/phpBB/phpbb/exception/exception_interface.php
+++ b/phpBB/phpbb/exception/exception_interface.php
@@ -18,7 +18,7 @@ namespace phpbb\exception;
  *
  * Define an exception which support a language var as message.
  */
-interface exception_interface
+interface exception_interface extends \Throwable
 {
 	/**
 	 * Return the arguments associated with the message if it's a language var.