diff --git a/occo.owl b/occo.owl
index 0cfd752..f0dc827 100644
--- a/occo.owl
+++ b/occo.owl
@@ -2911,7 +2911,7 @@ No imports</obo:IAO_0000115>
     <!-- http://purl.obolibrary.org/obo/OCCO_00000001 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OCCO_00000001">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/NCBITaxon_9606"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/BFO_0000023"/>
         <obo:IAO_0000115>A human who has a role in society that is realized in an occupation process or an activity as a livelihood (i.e., “means of support or subsistence”). To fulfill such an occupation, the occupation holder is required to have necessary capabilities including skill(s) and abilities. A human who has a role in society that is realized in an occupation process or an activity as a livelihood (i.e., “means of support or subsistence”). To fulfill such an occupation, the occupation holder is required to have necessary capabilities including skill(s) and abilities.</obo:IAO_0000115>
         <obo:IAO_0000117>Damion Dooley</obo:IAO_0000117>
         <obo:IAO_0000117>Eric Merrell</obo:IAO_0000117>