diff --git a/ext/custom-addons/dp_sale_delivery_date/models/sale_order.py b/ext/custom-addons/dp_sale_delivery_date/models/sale_order.py
index 5523103b..4531d1cd 100644
--- a/ext/custom-addons/dp_sale_delivery_date/models/sale_order.py
+++ b/ext/custom-addons/dp_sale_delivery_date/models/sale_order.py
@@ -7,9 +7,8 @@ from odoo import api, fields, models
 class SaleOrder(models.Model):
     _inherit = 'sale.order'
 
-#    delivery_date = fields.Date('Lieferdatum', compute='_compute_delivery_date', inverse='_inverse_delivery_date',store=True,index=True, track_visibility='onchange')
+    delivery_date = fields.Date('Lieferdatum', compute='_compute_delivery_date', inverse='_inverse_delivery_date',store=True,index=True, track_visibility='onchange')
 #    delivery_date = fields.Date('Lieferdatum', compute='_compute_delivery_date', inverse='_inverse_delivery_date')
-    delivery_date = fields.Date('Lieferdatum')
 
     @api.multi
     @api.depends('state','write_date','order_line.delivery_date','order_line.write_date')
diff --git a/ext/custom-addons/dp_sale_delivery_date/models/sale_order_line.py b/ext/custom-addons/dp_sale_delivery_date/models/sale_order_line.py
index 87374d8c..6ccbc0e7 100644
--- a/ext/custom-addons/dp_sale_delivery_date/models/sale_order_line.py
+++ b/ext/custom-addons/dp_sale_delivery_date/models/sale_order_line.py
@@ -7,7 +7,7 @@ from odoo import api, fields, models
 class SaleOrderLine(models.Model):
     _inherit = 'sale.order.line'
 
-    delivery_date = fields.Date('Lieferdatum', compute='_compute_delivery_date', inverse='_inverse_delivery_date')
+    delivery_date = fields.Date('Lieferdatum', compute='_compute_delivery_date', inverse='_inverse_delivery_date', store=True, index=True)
 
     @api.multi
     def _compute_delivery_date(self):