diff --git a/account_payment_order/views/account_payment_line.xml b/account_payment_order/views/account_payment_line.xml
index 1c2c72a06..6341f0b43 100644
--- a/account_payment_order/views/account_payment_line.xml
+++ b/account_payment_order/views/account_payment_line.xml
@@ -17,7 +17,12 @@
                             domain="[('reconciled','=', False), ('account_id.reconcile', '=', True)] "
                         />
                         <!-- we removed the filter on amount_to_pay, because we want to be able to select refunds -->
-                        <field name="date" />
+                        <field name="state" invisible="1" />
+                        <field
+                            name="date"
+                            attrs="{'readonly': [('state', '!=', 'confirmed')]}"
+                            force_save="1"
+                        />
                         <field name="ml_maturity_date" readonly="1" />
                         <field name="amount_currency" />
                         <field name="currency_id" />