In SkinPHPTal.php I added this in the section with the others: $nav_urls['projects'] = array('href' => htmlspecialchars($this->makeI18nUrl('projects'))); And in xhtml_slim.pt I added this: <li id="n-projects"><a href="${nav_urls/projects/href}" i18n:translate="string:projects">Projects</a></li> I also added the text "Projects" in MediaWiki:Projects. On some pages, such as special pages, the item is there. And in most content pages it's missing. How do I fix this? I'm running mediawiki 1.3.7