--- a/rdf-concepts/index.html	Wed Jun 01 20:01:51 2011 +0100
+++ b/rdf-concepts/index.html	Wed Jun 01 20:26:39 2011 +0100
@@ -1063,7 +1063,7 @@
     a <a>lexical form</a> and optionally a <dfn>language tag</dfn> as
     defined by [[!BCP47]]. The language tag, if present, MUST be
     well-formed according to
-    <a href="http://tools.ietf.org/html/rfc5646#section-2.2.9">section 2.2.9</a>
+    <a href="http://tools.ietf.org/html/bcp47#section-2.2.9">section 2.2.9</a>
     of [[!BCP47]], and MUST be normalized to lowercase.</p>
 
     <p><dfn title="typed literal">Typed literals</dfn> have a <a>lexical form</a>