--- a/2/ODRL20.ttl	Tue Sep 10 16:20:31 2013 +0100
+++ b/2/ODRL20.ttl	Tue Sep 10 16:23:58 2013 +0100
@@ -328,7 +328,7 @@
 	rdfs:isDefinedBy odrl: ;
 	vs:term_status "testing" ;
 	rdfs:domain :Constraint ;
-	rdfs:range xsd:string ;
+	rdfs:range rdfs:Resource ;
 	rdfs:label "unit"@en ;
 	rdfs:comment "The unit of measurement used for the constraint value."@en .