diff --git a/phpBB/includes/functions_admin.php b/phpBB/includes/functions_admin.php
index 70fff2da59..5e40c86c65 100644
--- a/phpBB/includes/functions_admin.php
+++ b/phpBB/includes/functions_admin.php
@@ -2588,9 +2588,19 @@ function prune($forum_id, $prune_mode, $prune_date, $prune_flags = 0, $auto_sync
 	* @var int		prune_flags		The prune flags
 	* @var bool		auto_sync		Whether or not to perform auto sync
 	* @var string	sql_and			SQL text appended to where clause
+	* @var int		prune_limit		The prune limit
 	* @since 3.1.3-RC1
+	* @changed 3.1.10-RC1			Added prune_limit
 	*/
-	$vars = array('forum_id', 'prune_mode', 'prune_date', 'prune_flags', 'auto_sync', 'sql_and');
+	$vars = array(
+		'forum_id',
+		'prune_mode',
+		'prune_date',
+		'prune_flags',
+		'auto_sync',
+		'sql_and',
+		'prune_limit'
+	);
 	extract($phpbb_dispatcher->trigger_event('core.prune_sql', compact($vars)));
 
 	$sql = 'SELECT topic_id