diff --git a/src-modules/module/viz/schluesseltabellen/sx_repository_customxmladd.unl b/src-modules/module/viz/schluesseltabellen/sx_repository_customxmladd.unl
index 0f68cac..340037e 100644
--- a/src-modules/module/viz/schluesseltabellen/sx_repository_customxmladd.unl
+++ b/src-modules/module/viz/schluesseltabellen/sx_repository_customxmladd.unl
@@ -160,7 +160,7 @@ R.uniquename as renderer_uniquename,\
 R.tid as renderer_id,\
 P.tid as prop_tid,\
 P.prop_uniquename,\
-(select P2.prop_uniquename from viz_property P2\
+(select min(P2.prop_uniquename) from viz_property P2\
 where P2.tid=N.parent_property_id) as parent_property_uniquename,\
 N.sortnr,\
 N.is_mandatory\