--- a/doc/book/en/development/datamodel/definition.rst	Thu Mar 18 09:05:49 2010 +0100
+++ b/doc/book/en/development/datamodel/definition.rst	Thu Mar 18 09:07:10 2010 +0100
@@ -209,6 +209,8 @@
 
 XXX note about how to add new constraint
 
+.. _securitymodel:
+
 
 The security model
 ~~~~~~~~~~~~~~~~~~
@@ -388,7 +390,7 @@
     attr_name = attr_type(properties)
 
 where `attr_type` is one of the type listed above and `properties` is
-a list of the attribute needs to statisfy (see :ref:`properties`
+a list of the attribute needs to statisfy (see `Properties`_
 for more details).