diff --git a/ontology/demo/construction/0.1/construction.ttl b/ontology/demo/construction/0.1/construction.ttl
index 42d97e7..cb66b6a 100644
--- a/ontology/demo/construction/0.1/construction.ttl
+++ b/ontology/demo/construction/0.1/construction.ttl
@@ -286,11 +286,6 @@ odp:coversRequirements rdf:type owl:AnnotationProperty .
                    rdfs:comment "The location of where this product is installed." ;
                    rdfs:label "installation location" .
 
-###  http://w3id.org/CEON/demo/construction/hasDismantlingCost
-:hasDismantlingCost rdf:type owl:ObjectProperty ;
-                   rdfs:subPropertyOf owl:topObjectProperty ;
-                   rdfs:comment "The cost of dismantling, expressed as an amount of money with a currency unit." ;
-                   rdfs:label "has dismantling cost" .
 
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 #    Data properties