diff --git a/doc/reference/cogl/cogl-docs.sgml b/doc/reference/cogl/cogl-docs.sgml
index ea48e5a1a..32cbbe594 100644
--- a/doc/reference/cogl/cogl-docs.sgml
+++ b/doc/reference/cogl/cogl-docs.sgml
@@ -63,6 +63,7 @@
     <xi:include href="xml/cogl-fixed.xml"/>
     <xi:include href="xml/cogl-color.xml"/>
     <xi:include href="xml/cogl-vertex-buffer.xml"/>
+    <xi:include href="xml/cogl-material.xml"/>
 
   </chapter>