diff --git a/phpBB/phpbb/event/kernel_exception_subscriber.php b/phpBB/phpbb/event/kernel_exception_subscriber.php
index f7582c5d90..373e59b0c8 100644
--- a/phpBB/phpbb/event/kernel_exception_subscriber.php
+++ b/phpBB/phpbb/event/kernel_exception_subscriber.php
@@ -52,6 +52,7 @@ class kernel_exception_subscriber implements EventSubscriberInterface
 	*
 	* @param \phpbb\template\template	$template	Template object
 	* @param \phpbb\language\language	$language	Language object
+	* @param bool						$debug		Set to true to show full exception messages
 	*/
 	public function __construct(\phpbb\template\template $template, \phpbb\language\language $language, $debug = false)
 	{