diff --git a/product/ERP5/PropertySheet/Assignment.py b/product/ERP5/PropertySheet/Assignment.py
index 058f1ebd540727554ffa1cc39d3989cc9e38ea6c..38403c629f07478bb7f45bd19bc85a751d4190c2 100755
--- a/product/ERP5/PropertySheet/Assignment.py
+++ b/product/ERP5/PropertySheet/Assignment.py
@@ -46,15 +46,6 @@ class Assignment(Path):
           'description' : 'A title that identify the collective agreement of this person in the case of employee/employer relation.',
           'type'        : 'string',
           'mode'        : 'w' },
-      {   'id'          : 'subordination_title',
-          'description' : 'The title of the organisation this person is subordinated to',
-          'type'        : 'string',
-          'acquisition_base_category'     : ('subordination',),
-          'acquisition_portal_type'       : ('Organisation', ),
-          'acquisition_copy_value'        : 0,
-          'acquisition_accessor_id'       : 'getTitle',
-          'acquisition_depends'           : None,
-          'mode'        : 'w' },
   )
 
-  _categories = ('activity', 'function', 'grade', 'site', 'role', 'skill', 'group', 'subordination',)
+  _categories = ('activity', 'function', 'grade', 'site', 'role', 'skill', 'group',)