--- a/model/prov-constraints.html	Fri Jul 20 08:44:01 2012 +0100
+++ b/model/prov-constraints.html	Fri Jul 20 08:45:57 2012 +0100
@@ -2413,7 +2413,7 @@
 can be used, revised, or other entities can be derived from them, and
 finally they may be invalidated.  The constraints on these events are
 illustrated graphically in <a href="#ordering-entity">Figure 3</a> and
-<a href="#ordering-trigger">Figure 4</a>.
+<a href="#ordering-entity-trigger">Figure 4</a>.
 </p>