diff --git a/rdf/tbox/filegraph/research-resource.owl b/rdf/tbox/filegraph/research-resource.owl
index 5d90bd3a..d7e7573a 100644
--- a/rdf/tbox/filegraph/research-resource.owl
+++ b/rdf/tbox/filegraph/research-resource.owl
@@ -153,6 +153,7 @@
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/ERO_0000014">
 
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBI_0000011"/>
+        <rdfs:subClassOf rdf:resource="http://vivoweb.org/ontology/core#Project"/>
         <rdfs:subClassOf>
             <owl:Restriction>
                 <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/BFO_0000051"/>