diff --git a/src/cco-modules/TimeOntology.ttl b/src/cco-modules/TimeOntology.ttl
index 8bbb49c..8e45ce3 100644
--- a/src/cco-modules/TimeOntology.ttl
+++ b/src/cco-modules/TimeOntology.ttl
@@ -69,7 +69,6 @@ cco:ont00001795 rdf:type owl:ObjectProperty ;
 ###  https://www.commoncoreontologies.org/ont00001814
 cco:ont00001814 rdf:type owl:ObjectProperty ;
                  rdfs:subPropertyOf cco:ont00001971 ;
-                 owl:inverseOf cco:ont00001821 ;
                  rdfs:domain obo:BFO_0000038 ;
                  rdfs:range obo:BFO_0000038 ;
                  rdfs:label "interval finishes"@en ;