diff --git a/ontology/saref4inma.ttl b/ontology/saref4inma.ttl
index 40381b1f59ea8569b6b5887be457fc80ceb30995..a413b9314e10f0f81a8213619213ef2348a0bae5 100644
--- a/ontology/saref4inma.ttl
+++ b/ontology/saref4inma.ttl
@@ -343,14 +343,6 @@ geo:SpatialObject a owl:Class ;
                                                   rdfs:label "Building space"@en .
 
 
-###  https://saref.etsi.org/saref4inma/ActualMeasurement
-s4inma:ActualMeasurement rdf:type owl:Class ;
-                         rdfs:subClassOf saref:Observation ;
-                         owl:disjointWith s4inma:ExpectedMeasurement ;
-                         rdfs:comment "Describes whether the measurement is actually measured during the production process. Disjoint with ExpectedMeasurement." ;
-                         rdfs:label "Actual measurement"@en .
-
-
 ###  https://saref.etsi.org/saref4inma/Area
 s4inma:Area rdf:type owl:Class ;
             rdfs:subClassOf <https://saref.etsi.org/saref4bldg/BuildingSpace> ;
@@ -383,13 +375,6 @@ s4inma:Batch rdf:type owl:Class ;
              rdfs:label "Batch"@en .
 
 
-###  https://saref.etsi.org/saref4inma/ExpectedMeasurement
-s4inma:ExpectedMeasurement rdf:type owl:Class ;
-                           rdfs:subClassOf saref:Observation ;
-                           rdfs:comment "Describes whether the measurement is expected (i.e., planned before the production process). Disjoint with ActualMeasurement." ;
-                           rdfs:label "Expected measurement"@en .
-
-
 ###  https://saref.etsi.org/saref4inma/Factory
 s4inma:Factory rdf:type owl:Class ;
                rdfs:subClassOf <https://saref.etsi.org/saref4bldg/Building> ;