diff --git a/views/purchase_order_views.xml b/views/purchase_order_views.xml
index e5a3508..d9a0208 100644
--- a/views/purchase_order_views.xml
+++ b/views/purchase_order_views.xml
@@ -6,7 +6,7 @@
         <field name="inherit_id" ref="purchase.purchase_order_form"/>
         <field name="arch" type="xml">
             <xpath expr="//header" position="inside">
-                <button name="action_export_bc" string="Export PO to BC Format" type="object" class="oe_highlight" invisible="state not in ('purchase', 'done')"/>
+                <button name="action_export_bc" string="Export PO to BC Format" type="object" class="oe_highlight" invisible="state == 'cancel'"/>
             </xpath>
         </field>
     </record>