diff --git a/inc/instance-config.php b/inc/instance-config.php
index d9fdb988..0cf93e6a 100644
--- a/inc/instance-config.php
+++ b/inc/instance-config.php
@@ -284,6 +284,7 @@ $config['additional_javascript'][] = 'js/multi-image.js'; // Support for posting
 
 $config['additional_javascript'][] = 'js/jquery-ui.custom.min.js';
 $config['additional_javascript'][] = 'js/quick-reply.js';
+$config['additional_javascript'][] = 'js/post-menu.js';
 $config['additional_javascript'][] = 'js/post-filter.js';
 
 $config['additional_javascript'][] = 'js/options.js';
diff --git a/js/post-filter.js b/js/post-filter.js
index 3bf55a51..9c2e232d 100644
--- a/js/post-filter.js
+++ b/js/post-filter.js
@@ -1,3 +1,8 @@
+/* Depends on post-menu.js
+ * Usage:
+ * $config['additional_javascript'][] = 'js/post-menu.js';
+ * $config['additional_javascript'][] = 'js/post-filter.js';
+ */
 if (active_page === 'thread' || active_page === 'index' || active_page === 'catalog' || active_page === 'ukko') {
 	$(document).on('menu_ready', function () {
 		'use strict';