diff --git a/ontology/saref4ehaw.ttl b/ontology/saref4ehaw.ttl
index 8791b5ad89c26775ecc9784eae721ce487d3a668..e3077e177f0b4afebad70b4301bf4078a3606dbc 100644
--- a/ontology/saref4ehaw.ttl
+++ b/ontology/saref4ehaw.ttl
@@ -1000,6 +1000,7 @@ s4ehaw:FunctionalDevice rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/saref4ehaw/Habit
 s4ehaw:Habit rdf:type owl:Class ;
+             rdfs:subClassOf saref:State ;
              rdfs:comment "Defined for users (that can in particular be patients) habits modelling, e.g. smoking, alcohol drinking, overeating, undereating..."@en ;
              rdfs:label "Habit"@en .