diff --git a/inc/instance-config.php b/inc/instance-config.php
index 59902a99..1d9db89d 100644
--- a/inc/instance-config.php
+++ b/inc/instance-config.php
@@ -146,6 +146,7 @@
 	$config['markup'][] = array("/^[ |\t]*==(.+?)==[ |\t]*$/m", "<span class=\"heading\">\$1</span>");
 	$config['markup'][] = array("/\[spoiler\](.+?)\[\/spoiler\]/", "<span class=\"spoiler\">\$1</span>");
 	$config['markup'][] = array("/~~(.+?)~~/", "<s>\$1</s>");
+	$config['markup'][] = array("/__(.+?)__/", "<u>\$1</u>");
 
 	$config['boards'] = array(array('<i class="fa fa-home" title="Home"></i>' => '/', '<i class="fa fa-tags" title="Boards"></i>' => '/boards.html', '<i class="fa fa-question" title="FAQ"></i>' => '/faq.html', '<i class="fa fa-random" title="Random"></i>' => '/random.php', '<i class="fa fa-plus" title="New board"></i>' => '/create.php', '<i class="fa fa-ban" title="Public ban list"></i>' => '/bans.html', '<i class="fa fa-search" title="Search"></i>' => '/search.php', '<i class="fa fa-cog" title="Manage board"></i>' => '/mod.php', '<i class="fa fa-quote-right" title="Chat"></i>' => 'https://qchat.rizon.net/?channels=#8chan'), array('b', 'meta', 'int'), array('<i class="fa fa-twitter" title="Twitter"></i>'=>'https://twitter.com/infinitechan'));
 	//$config['boards'] = array(array('<i class="fa fa-home" title="Home"></i>' => '/', '<i class="fa fa-tags" title="Boards"></i>' => '/boards.html', '<i class="fa fa-question" title="FAQ"></i>' => '/faq.html', '<i class="fa fa-random" title="Random"></i>' => '/random.php', '<i class="fa fa-plus" title="New board"></i>' => '/create.php', '<i class="fa fa-search" title="Search"></i>' => '/search.php', '<i class="fa fa-cog" title="Manage board"></i>' => '/mod.php', '<i class="fa fa-quote-right" title="Chat"></i>' => 'https://qchat.rizon.net/?channels=#8chan'), array('b', 'meta', 'int'), array('v', 'a', 'tg', 'fit', 'pol', 'tech', 'mu', 'co', 'sp', 'boards'), array('<i class="fa fa-twitter" title="Twitter"></i>'=>'https://twitter.com/infinitechan'));