diff --git modules/forum/forum-icon.tpl.php modules/forum/forum-icon.tpl.php
index 2b2cf3c..9a9c8e5 100644
--- modules/forum/forum-icon.tpl.php
+++ modules/forum/forum-icon.tpl.php
@@ -7,7 +7,7 @@
  *
  * Available variables:
  * - $new_posts: Indicates whether or not the topic contains new posts.
- * - $icon: The icon to display. May be one of 'hot', 'hot-new', 'new',
+ * - $icon_class: The icon to display. May be one of 'hot', 'hot-new', 'new',
  *   'default', 'closed', or 'sticky'.
  * - $first_new: Indicates whether this is the first topic with new posts.
  *