diff --git a/doc/reference/clutter-docs.xml.in b/doc/reference/clutter-docs.xml.in
index 28095caa4..a4b823520 100644
--- a/doc/reference/clutter-docs.xml.in
+++ b/doc/reference/clutter-docs.xml.in
@@ -1,10 +1,10 @@
-<?xml version="1.0"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
-               "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+               "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
 <!ENTITY version "@VERSION@">
 ]>
 
-<book id="index" xmlns:xi="http://www.w3.org/2003/XInclude">
+<book id="clutter" lang="en" xmlns:xi="http://www.w3.org/2003/XInclude">
   <bookinfo>
     <title>Clutter Reference Manual</title>
     <releaseinfo>for Clutter &version;</releaseinfo>