diff --git a/addons/sale/sale_view.xml b/addons/sale/sale_view.xml
index 45e08e72be0..f3a7ecc2ce3 100644
--- a/addons/sale/sale_view.xml
+++ b/addons/sale/sale_view.xml
@@ -488,7 +488,7 @@
                     <h2><field name="order_partner_id"/></h2>
                     <group>
                         <group>
-                            <field name="product_id" readonly="1"/>
+                            <field name="product_id"/>
                             <label for="product_uom_qty"/>
                             <div>
                                 <field name="product_uom_qty" readonly="1" class="oe_inline"/>