diff --git a/public/ontology/diglib-struct.rdf b/public/ontology/diglib-struct.rdf
index 2672c73716dd552a0b5d4158ea9a44e8f5c96d53..13f296ae04507701eb561faf1a8d1c76f137c94c 100644
--- a/public/ontology/diglib-struct.rdf
+++ b/public/ontology/diglib-struct.rdf
@@ -163,10 +163,10 @@
   <rdfs:Property rdf:about="http://uri.hab.de/ontology/diglib-struct#TitleDocMain">
     <rdfs:label xml:lang="de">Titel</rdfs:label>
   </rdfs:Property>
-  <rdfs:Property rdf:about="http://uri.hab.de/ontology/diglib-struct#page">
+  <rdfs:Class rdf:about="http://uri.hab.de/ontology/diglib-struct#page">
     <rdfs:label xml:lang="de">Seite</rdfs:label>
-  </rdfs:Property>
-  <rdfs:Property rdf:about="http://uri.hab.de/ontology/diglib-struct#physSequence">
+  </rdfs:Class>
+  <rdfs:Class rdf:about="http://uri.hab.de/ontology/diglib-struct#physSequence">
     <rdfs:label xml:lang="de">Seiten</rdfs:label>
-  </rdfs:Property>
+  </rdfs:Class>
 </rdf:RDF>