diff --git a/ontology/CASE-unstable-2.0.0.ttl b/ontology/CASE-unstable-2.0.0.ttl
index 8210f071..024984e3 100644
--- a/ontology/CASE-unstable-2.0.0.ttl
+++ b/ontology/CASE-unstable-2.0.0.ttl
@@ -8399,7 +8399,8 @@ observable:ObservablePattern
 		;
 	rdfs:subClassOf
 		core:Endurant ,
-		observable:Observable
+		observable:Observable ,
+		pattern:Pattern
 		;
 	rdfs:label "ObservablePattern"@en ;
 	rdfs:comment "An observable pattern is a grouping of characteristics unique to a logical pattern composed of observable object and observable action properties."@en ;