diff --git a/purchase.xml b/purchase.xml
index cce0429024..5c3f36bbf5 100644
--- a/purchase.xml
+++ b/purchase.xml
@@ -11,11 +11,8 @@ this repository contains the full copyright notices and license terms. -->
                 <data>
                     <xpath expr="/form/field[@name=&quot;delivery_time&quot;]"
                         position="after">
-                        <field name="weekdays" colspan="4">
-                            <tree string="Week Days" editable="bottom" fill="1">
-                                <field name="weekday"/>
-                            </tree>
-                        </field>
+                        <field name="weekdays" colspan="4"
+                            view_ids="stock_supply_day.product_supplier_weekdayview_tree_editable"/>
                     </xpath>
                 </data>
                 ]]>
@@ -41,6 +38,7 @@ this repository contains the full copyright notices and license terms. -->
         <record model="ir.ui.view" id="product_supplier_weekdayview_tree">
             <field name="model">purchase.product_supplier.day</field>
             <field name="type">tree</field>
+            <field name="priority" eval="10"/>
             <field name="arch" type="xml">
                 <![CDATA[
                 <tree string="Week Day">
@@ -51,5 +49,20 @@ this repository contains the full copyright notices and license terms. -->
             </field>
         </record>
 
+        <record model="ir.ui.view"
+            id="product_supplier_weekdayview_tree_editable">
+            <field name="model">purchase.product_supplier.day</field>
+            <field name="type">tree</field>
+            <field name="priority" eval="20"/>
+            <field name="arch" type="xml">
+                <![CDATA[
+                <tree string="Week Day" editable="bottom" fill="1">
+                    <field name="product_supplier"/>
+                    <field name="weekday"/>
+                </tree>
+                ]]>
+            </field>
+        </record>
+
     </data>
 </tryton>