diff --git a/addons/sale_project/views/project_task_views.xml b/addons/sale_project/views/project_task_views.xml
index b4aefd19fc2..39e9cc013f0 100644
--- a/addons/sale_project/views/project_task_views.xml
+++ b/addons/sale_project/views/project_task_views.xml
@@ -95,7 +95,14 @@
                 <field name="allow_billable" invisible="1"/>
             </xpath>
             <xpath expr="//field[@name='child_ids']/tree/field[@name='partner_id']" position="after">
-                <field name="sale_line_id" optional="hide" readonly="1" groups="sales_team.group_sale_salesman"/>
+                <field name="sale_line_id"
+                       optional="hide"
+                       options='{"no_create": True}'
+                       context="{'create': False, 'edit': False, 'delete': False, 'with_price_unit': True}"
+                       placeholder="Non-billable"
+                       groups="sales_team.group_sale_salesman"
+                       attrs="{'invisible': [('allow_billable', '=', False)]}"
+                />
                 <field name="sale_line_id" optional="hide" options="{'no_open': True}" readonly="1" groups="!sales_team.group_sale_salesman"/>
                 <field name="allow_billable" invisible="1"/>
             </xpath>