diff --git a/src/cco-modules/ExtendedRelationOntology.ttl b/src/cco-modules/ExtendedRelationOntology.ttl
index 8762cff..898a3fd 100644
--- a/src/cco-modules/ExtendedRelationOntology.ttl
+++ b/src/cco-modules/ExtendedRelationOntology.ttl
@@ -417,7 +417,7 @@ cco:ont00001852 rdf:type owl:ObjectProperty ;
                  rdfs:subPropertyOf obo:BFO_0000056 ;
                  owl:inverseOf cco:ont00001949 ;
                  rdfs:domain obo:BFO_0000040 ;
-                 rdfs:range obo:BFO_0000015 ;
+                 rdfs:range cco:ont00001017 ;
                  rdfs:label "accessory in"@en ;
                  skos:definition "y is_accessory_in x iff x is an instance of Process and y is an instance of Agent, such that y assists another agent in the commission of x, and y was not located at the location of x when x occurred, and y was not an agent_in x."@en ;
                  cco:ont00001754 "http://en.wikipedia.org/wiki/Accessory_(legal_term)" ;