diff --git a/addons/lunch/lunch.py b/addons/lunch/lunch.py
index c0e5ed78e3e..eb22c3133ce 100644
--- a/addons/lunch/lunch.py
+++ b/addons/lunch/lunch.py
@@ -225,7 +225,8 @@ class lunch_order(osv.Model):
             doc = etree.XML(res['arch'])
             node = doc.xpath("//div[@name='preferences']")
             to_add = etree.fromstring(text_xml)
-            node[0].append(to_add)
+            if node and len(node)>0:
+                node[0].append(to_add)
             res['arch'] = etree.tostring(doc)
         return res
 
diff --git a/addons/lunch/lunch_view.xml b/addons/lunch/lunch_view.xml
index 8fa9962193a..5efc0eed12c 100644
--- a/addons/lunch/lunch_view.xml
+++ b/addons/lunch/lunch_view.xml
@@ -312,6 +312,7 @@
         <record model="ir.ui.view" id="orders_tree_view">
             <field name="name">Orders Tree View</field>
             <field name="model">lunch.order</field>
+            <field name="type">tree</field>
             <field name="arch" type="xml">
                 <tree string="Orders Tree">
                     <field name="date"/>