diff --git a/include/client/header.inc.php b/include/client/header.inc.php
index 7266060fbf2f50160e54b1a275f3b4e90fafc87e..9f20098b4b1b4fcfc2d891973717c42876296fde 100644
--- a/include/client/header.inc.php
+++ b/include/client/header.inc.php
@@ -3,6 +3,7 @@ $title=($cfg && is_object($cfg) && $cfg->getTitle())?$cfg->getTitle():'osTicket
header("Content-Type: text/html; charset=UTF-8\r\n");
?>
<!DOCTYPE html>
+<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">