diff --git a/data/ontologies/digital-heraldry-ontology-representation.ttl b/data/ontologies/digital-heraldry-ontology-representation.ttl
index 87f5aeef16023202576e54e11aafa45809e1664d..6a5a84cbc01b231ccefa99d540a7319128376c0e 100644
--- a/data/ontologies/digital-heraldry-ontology-representation.ttl
+++ b/data/ontologies/digital-heraldry-ontology-representation.ttl
@@ -110,6 +110,12 @@ dhor:hasItemID rdf:type owl:ObjectProperty ;
                rdfs:label "hasItemID"@en .
 
 
+###  http://digitalheraldry.org/digital-heraldry-ontology/representation#hasOMAid
+dhor:hasOMAid rdf:type owl:ObjectProperty ;
+              rdfs:domain dhor:CoatOfArmsRepresentation ;
+              rdfs:label "hasOMAid"@en .
+
+
 ###  http://digitalheraldry.org/digital-heraldry-ontology/representation#hasPrimaryBlazon
 dhor:hasPrimaryBlazon rdf:type owl:ObjectProperty ;
                       rdfs:subPropertyOf dhor:hasBlazon ;