diff --git a/views/sale_order.xml b/views/sale_order.xml
index b67ae0e1738bb0d212b1212617afb3adbb2e5758..7951ef408cc5315e28d6638b16337178f9f25457 100644
--- a/views/sale_order.xml
+++ b/views/sale_order.xml
@@ -34,7 +34,7 @@
         <record id="fumoc_sale_quotation_tree_inherit" model="ir.ui.view">
             <field name="name">fumoc_sale.sale.quotation.tree</field>
             <field name="model">sale.order</field>
-            <field name="inherit_id" ref="	sale.view_quotation_tree"/>
+            <field name="inherit_id" ref="sale.view_quotation_tree"/>
             <field name="priority" eval="8"/>
             <field name="arch" type="xml">
                 <xpath expr="//field[@name='partner_id']" position="after">