diff --git a/addons/event_sale/views/sale_order.xml b/addons/event_sale/views/sale_order.xml
index 6cf0672e7cd..2d873c23f2a 100644
--- a/addons/event_sale/views/sale_order.xml
+++ b/addons/event_sale/views/sale_order.xml
@@ -7,7 +7,7 @@
              <field name="inherit_id" ref="sale.view_order_form" />
              <field name="arch" type="xml">
                 <xpath expr="//field[@name='product_id']" position="after">
-                    <field name="event_id" domain="['|', ('type','=', False),('type', '=', event_type_id),('date_end','&gt;=',time.strftime('%Y-%m-%d 00:00:00')]" attrs="{'invisible': [('event_ok', '=', False)],'required': [('event_ok', '!=', False)]}"/>
+                    <field name="event_id" domain="['|', ('type','=', False),('type', '=', event_type_id),('date_end','&gt;=',time.strftime('%Y-%m-%d 00:00:00'))]" attrs="{'invisible': [('event_ok', '=', False)],'required': [('event_ok', '!=', False)]}"/>
                     <field name="event_ticket_id" domain="[('event_id', '=', event_id), ('seats_available', '>', 0)]" attrs="{'invisible': [('event_id', '=', False)]}"
                         on_change="onchange_event_ticket_id(event_ticket_id, context)"/>
                     <field name="event_type_id" invisible="1"/>