diff --git a/cake/libs/view/helpers/html.php b/cake/libs/view/helpers/html.php
index c5165515ffa..951cd430c1c 100644
--- a/cake/libs/view/helpers/html.php
+++ b/cake/libs/view/helpers/html.php
@@ -122,6 +122,7 @@ class HtmlHelper extends AppHelper {
'html4-strict' => '',
'html4-trans' => '',
'html4-frame' => '',
+ 'html5' => '',
'xhtml-strict' => '',
'xhtml-trans' => '',
'xhtml-frame' => '',
@@ -149,6 +150,7 @@ public function addCrumb($name, $link = null, $options = null) {
* - html4-strict: HTML4 Strict.
* - html4-trans: HTML4 Transitional.
* - html4-frame: HTML4 Frameset.
+ * - html5: HTML5.
* - xhtml-strict: XHTML1 Strict.
* - xhtml-trans: XHTML1 Transitional.
* - xhtml-frame: XHTML1 Frameset.