diff -r 814ea44c2469 -r 53a80accc248 RelaxNG/publidoc.rng
--- a/RelaxNG/publidoc.rng	dim. juin 12 19:35:31 2011 +0200
+++ b/RelaxNG/publidoc.rng	lun. juin 13 18:55:59 2011 +0200
@@ -803,6 +803,9 @@
     </element>
   </define>
   <define name="media.content">
+    <optional>
+      <ref name="block.head"/>
+    </optional>
     <oneOrMore>
       <ref name="image"/>
     </oneOrMore>