diff --git a/src/cco-modules/InformationEntityOntology.ttl b/src/cco-modules/InformationEntityOntology.ttl
index 78f9928..85e43df 100644
--- a/src/cco-modules/InformationEntityOntology.ttl
+++ b/src/cco-modules/InformationEntityOntology.ttl
@@ -198,9 +198,10 @@ cco:ont00001900 rdf:type owl:ObjectProperty ;
 cco:ont00001904 rdf:type owl:ObjectProperty ;
                  rdfs:subPropertyOf cco:ont00001917 ;
                  owl:inverseOf cco:ont00001966 ;
+                 rdfs:domain obo:BFO_0000001 ;
                  rdfs:range cco:ont00001163 ;
                  rdfs:label "is measured by"@en ;
-                 skos:definition "y is_measured_by x iff x is an instance of Information Content Entity and y is an instance of Entity, such that x describes some attribute of y relative to some scale or classification scheme."@en ;
+                 skos:definition "y is_measured_by x iff x is an instance of Measurement Information Content Entity and y is an instance of Entity and y measures x."@en ;
                  cco:ont00001760 "https://www.commoncoreontologies.org/InformationEntityOntology"^^xsd:anyURI .