diff --git a/ext/custom-addons/dp_custom/models/sale.py b/ext/custom-addons/dp_custom/models/sale.py
index 53439cfa..ad3c91e9 100644
--- a/ext/custom-addons/dp_custom/models/sale.py
+++ b/ext/custom-addons/dp_custom/models/sale.py
@@ -62,13 +62,15 @@ class SaleOrder(models.Model):
     confirmation_nr = fields.Char('Freigabenummer')
     order_type = fields.Selection(ORDER_TYPES, string='Auftragsart', default='M')
 
+    pg9_call = fields.Char(string='PG9-Auftrag', compute='_pg9_call', store=False)
+
     @api.multi
-    def action_pg9_call(self):
-        addr = request.httprequest.environ ["REMOTE_ADDR"]
-        self.ensure_one()
+    def _pg9_call(self) :
         for record in self :
-            xref = 'http://%s:9531/pg9/order/xref:%s' % (addr, record.origin)
-            r = requests.get(xref)
+            xref = 'xref:'+record.origin
+            record.pg9_call = 'http://localhost:9531/pg9/order/' + xref
+
+    # end def _pg9_call
 
     @api.multi
     @api.onchange('partner_invoice_id')