diff --git a/rdf/student.rdf.php b/rdf/student.rdf.php
index 5f47ece4d..f99f85225 100644
--- a/rdf/student.rdf.php
+++ b/rdf/student.rdf.php
@@ -177,6 +177,7 @@ function draw_content_liste($row)
 			<STUDENT:punkte3><![CDATA['.$row->rt_punkte3.']]></STUDENT:punkte3>
 			<STUDENT:dual><![CDATA['.($row->dual=='t'?'true':'false').']]></STUDENT:dual>
 			<STUDENT:dual_bezeichnung><![CDATA['.($row->dual=='t'?'Ja':'Nein').']]></STUDENT:dual_bezeichnung>
+			<STUDENT:matr_nr><![CDATA['.$row->matr_nr.']]></STUDENT:matr_nr>
       	</RDF:Description>
       </RDF:li>';
 }
@@ -406,7 +407,7 @@ if($xmlformat=='rdf')
 						(SELECT rt_punkte1 as punkte FROM public.tbl_prestudent WHERE prestudent_id=tbl_student.prestudent_id) as rt_punkte1,
 						(SELECT rt_punkte2 as punkte FROM public.tbl_prestudent WHERE prestudent_id=tbl_student.prestudent_id) as rt_punkte2,
 						(SELECT rt_punkte3 as punkte FROM public.tbl_prestudent WHERE prestudent_id=tbl_student.prestudent_id) as rt_punkte3,
-						 tbl_prestudent.dual as dual
+						 tbl_prestudent.dual as dual, p.matr_nr
 						FROM public.tbl_student 
 							JOIN public.tbl_benutzer ON (student_uid=uid) JOIN public.tbl_person p USING (person_id)  JOIN public.tbl_prestudent USING(prestudent_id) ";
 		if($gruppe_kurzbz!=null)