diff --git a/header.php b/header.php
index 8a234ff..53e59d2 100644
--- a/header.php
+++ b/header.php
@@ -1,10 +1,13 @@
-<html>
+<!DOCTYPE html>
+<html lang="en">
 <head>
 	<link rel="stylesheet" href="https://tilde.team/css/hacker.css">
 	<link rel="stylesheet" href="https://tilde.team/css/fork-awesome.css">
 	<link rel="icon" type="image/png" sizes="96x96" href="/favicon-96x96.png">
 	<title>tilde.chat | <?=($title ?? 'irc network for tildes')?></title>
 
+	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
+
 	<meta property="og:title" content="tilde.chat | <?=($title ?? 'irc network for tildes')?>">
 	<meta property="og:url" content="https://tilde.chat<?=$_SERVER['REQUEST_URI']?>">
 	<meta property="og:description" content="<?=($desc??($title??'the home of an irc network for tildes'))?>">
