diff --git a/src/cco-extensions/ModalRelationOntology.ttl b/src/cco-extensions/ModalRelationOntology.ttl
index 3dec1e8..7f45304 100644
--- a/src/cco-extensions/ModalRelationOntology.ttl
+++ b/src/cco-extensions/ModalRelationOntology.ttl
@@ -1407,6 +1407,7 @@ mro:ont00001843 rdf:type owl:ObjectProperty ;
 mro:ont00001844 rdf:type owl:ObjectProperty ;
                 rdfs:subPropertyOf mro:BFO_0000057 ;
                 owl:inverseOf mro:ont00001993 ;
+                rdfs:domain cco:ont00000402 ;
                 rdfs:range cco:ont00001017 ;
                 rdfs:label "has sender"@en ;
                 <http://www.w3.org/2004/02/skos/core#definition> "y has_sender x iff x is an instance of Agent and y is an instance of Act Of Communication, such that x is the initiator and encoder of the InformationContentEntity intended for communication in y."@en ;