diff --git a/ontology/CASE-develop-2.0.0.ttl b/ontology/CASE-develop-2.0.0.ttl
index f9ee8893..84343167 100644
--- a/ontology/CASE-develop-2.0.0.ttl
+++ b/ontology/CASE-develop-2.0.0.ttl
@@ -8352,7 +8352,10 @@ observable:ObservablePattern
 		owl:Class ,
 		sh:NodeShape
 		;
-	rdfs:subClassOf observable:Observable ;
+	rdfs:subClassOf
+		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 ;
 	sh:targetClass observable:ObservablePattern ;