Index: bbp-includes/forums/template-tags.php
===================================================================
--- bbp-includes/forums/template-tags.php	(revision 4253)
+++ bbp-includes/forums/template-tags.php	(working copy)
@@ -532,7 +532,7 @@
 		else
 			$anchor = __( 'No Topics', 'bbpress' );
 
-		return apply_filters( 'bbp_get_forum_freshness_link', $anchor, $forum_id );
+		return apply_filters( 'bbp_get_forum_freshness_link', $anchor, $forum_id, $time_since, $link_url, $title );
 	}
 
 /**