diff --git a/src-modules/module/sxc/masken/47200_maskeninfo.unl b/src-modules/module/sxc/masken/47200_maskeninfo.unl
index c2e2feb..fd950a9 100644
--- a/src-modules/module/sxc/masken/47200_maskeninfo.unl
+++ b/src-modules/module/sxc/masken/47200_maskeninfo.unl
@@ -141,7 +141,7 @@ drop table if exists tmp_stud;\
 drop table if exists tmp_sos_sos;\
 		\
 		select \
-M.hs_nr,\
+M.hs_nr::varchar(255) as hs_nr,\
 M.hochschulinfo_name,\
 'Studienjahr' as studienjahr_label,\
 '' || jahr as jahr,\