diff --git a/ontology/saref4ehaw.ttl b/ontology/saref4ehaw.ttl
index 01bef357042b03c7cf8472a8f575afd0a46211c8..1634bd1a9831128f7f01767a79d925cde5c0bb94 100644
--- a/ontology/saref4ehaw.ttl
+++ b/ontology/saref4ehaw.ttl
@@ -156,7 +156,7 @@ s4ehaw:hasComputingPower rdf:type owl:ObjectProperty ;
 s4ehaw:hasDataConstraint rdf:type owl:ObjectProperty ;
                      rdfs:domain s4ehaw:Data ;
                      rdfs:range s4ehaw:DataConstraint ;
-                     rdfs:comment "Data has data constraints (validity, operating, security...)."@en ;
+                     rdfs:comment "Data has data constraints (validity, security...)."@en ;
                      rdfs:label "has data constraint"@en .
 
 
@@ -943,7 +943,7 @@ s4ehaw:ComputingPower rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/saref4ehaw/DataConstraint
 s4ehaw:DataConstraint rdf:type owl:Class ;
-                  rdfs:comment "The Data constraints, e.g. validity, operating, security..."@en ;
+                  rdfs:comment "The Data constraints, e.g. validity, security..."@en ;
                   rdfs:label "Data constraint"@en .