diff --git a/addons/sale_order_dates/sale.py b/addons/sale_order_dates/sale.py
index 1b4bad360e6..877199b32ad 100644
--- a/addons/sale_order_dates/sale.py
+++ b/addons/sale_order_dates/sale.py
@@ -48,7 +48,8 @@ class sale_order_dates(osv.osv):
                 dt=DateTime.strptime(order.date_order, '%Y-%m-%d') + DateTime.RelativeDateTime(days=line.delay or 0.0)
                 dt_s = dt.strftime('%Y-%m-%d')
                 dates_list.append(dt_s)
-            res[order.id] = min(dates_list)
+            if dates_list:
+                res[order.id] = min(dates_list)
             return res
 
     _columns = {
diff --git a/addons/stock/stock_view.xml b/addons/stock/stock_view.xml
index ab33b07aacb..3fdfda9e057 100644
--- a/addons/stock/stock_view.xml
+++ b/addons/stock/stock_view.xml
@@ -322,6 +322,7 @@
                     <field name="date_planned" string="Date"/>
                     <field name="date_expected" string="Date Expected"/>
                     <field name="state"/>
+                    <button name="action_done" states="confirmed,assigned" string="Done" type="object" icon="gtk-jump-to"/>
                 </tree>
             </field>
         </record>