diff --git a/sale_agent/__manifest__.py b/sale_agent/__manifest__.py
index 8dd6598..ceb40be 100644
--- a/sale_agent/__manifest__.py
+++ b/sale_agent/__manifest__.py
@@ -4,7 +4,7 @@
 
 {
     'name': 'Sale Agent',
-    'version': '16.0.1.0.0',
+    'version': '18.0.1.0.0',
     'category': 'Sales',
     'license': 'AGPL-3',
     'summary': 'Add agent on partner, sale order and customer invoice/refund',
@@ -19,5 +19,5 @@
         "views/account_invoice_report.xml",
         ],
     'demo': ['demo/demo.xml'],
-    'installable': False,
+    'installable': True,
 }
diff --git a/sale_agent/views/res_partner.xml b/sale_agent/views/res_partner.xml
index a13a7c3..144d963 100644
--- a/sale_agent/views/res_partner.xml
+++ b/sale_agent/views/res_partner.xml
@@ -14,7 +14,7 @@
     <field name="inherit_id" ref="base.view_partner_form"/>
     <field name="arch" type="xml">
         <xpath expr="//page[@name='sales_purchases']//group[@name='sale']/field[@name='user_id']" name="user_id" position="after">
-            <field name="agent_id" attrs="{'invisible': [('parent_id', '!=', False)]}"/>
+            <field name="agent_id" invisible="parent_id"/>
         </xpath>
         <group name="misc" position="inside">
             <field name="agent"/>