diff --git a/ontology/saref4wear.ttl b/ontology/saref4wear.ttl
index 78a500ebd340254c34bc4ea645869d7c144be5fc..a8c2bcd527747dd14886e549f387a29e0902e2f8 100644
--- a/ontology/saref4wear.ttl
+++ b/ontology/saref4wear.ttl
@@ -629,11 +629,11 @@ saref:Device rdf:type owl:Class ;
              rdfs:label "Device"@en .
 
 
-###  https://saref.etsi.org/core/EventFunction
-saref:EventFunction rdf:type owl:Class ;
+###  https://saref.etsi.org/s4wear/NotifyingFunction
+s4wear:NotifyingFunction rdf:type owl:Class ;
                     rdfs:subClassOf saref:Function ;
                     rdfs:comment "A function that allows to notify about some relevant activity; e.g., that a certain threshold value has been exceeded or that some object has moved."@en ;
-                    rdfs:label "Event function"@en .
+                    rdfs:label "Notifying function"@en .
 
 
 ###  https://saref.etsi.org/core/FeatureOfInterest
@@ -771,7 +771,7 @@ s4wear:BiometricProperty rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/saref4wear/CommunicatingFunction
 s4wear:CommunicatingFunction rdf:type owl:Class ;
-                             rdfs:subClassOf saref:EventFunction ;
+                             rdfs:subClassOf s4wear:NotifyingFunction ;
                              rdfs:comment "A function that allows a device to communicate with another device."@en ;
                              rdfs:label "Communicating function"@en .