diff --git a/addons/mrp/views/mrp_unbuild_views.xml b/addons/mrp/views/mrp_unbuild_views.xml
index d71d49138c5..84cf1cd4886 100644
--- a/addons/mrp/views/mrp_unbuild_views.xml
+++ b/addons/mrp/views/mrp_unbuild_views.xml
@@ -122,7 +122,7 @@
                                 </div>
                             </group>
                             <group>
-                                <field name="mo_id" domain="[('state','=','done')]" required="True"/>
+                                <field name="mo_id" domain="[('state','=','done')]"/>
                                 <field name="location_id" groups="stock.group_stock_multi_locations"/>
                                 <field name="location_dest_id" groups="stock.group_stock_multi_locations"/>
                                 <field name="has_tracking" invisible="1"/>