diff --git a/addons/sale_timesheet/models/project_sale_line_employee_map.py b/addons/sale_timesheet/models/project_sale_line_employee_map.py
index 039978ece89..7a0bee7c5f0 100644
--- a/addons/sale_timesheet/models/project_sale_line_employee_map.py
+++ b/addons/sale_timesheet/models/project_sale_line_employee_map.py
@@ -19,6 +19,7 @@ class ProjectProductEmployeeMap(models.Model):
             ('state', 'in', ['sale', 'done']),
             ('order_partner_id', '=?', partner_id),
             '|', ('company_id', '=', False), ('company_id', '=', company_id)]""")
+    sale_order_id = fields.Many2one(related="project_id.sale_order_id")
     company_id = fields.Many2one('res.company', string='Company', related='project_id.company_id')
     partner_id = fields.Many2one(related='project_id.partner_id')
     price_unit = fields.Float("Unit Price", compute='_compute_price_unit', store=True, readonly=True)
diff --git a/addons/sale_timesheet/views/project_task_views.xml b/addons/sale_timesheet/views/project_task_views.xml
index d115ca09079..b170f820d93 100644
--- a/addons/sale_timesheet/views/project_task_views.xml
+++ b/addons/sale_timesheet/views/project_task_views.xml
@@ -16,8 +16,9 @@
                         <tree editable="bottom">
                             <field name="company_id" invisible="1"/>
                             <field name="partner_id" invisible="1"/>
+                            <field name="sale_order_id" invisible="1"/>
                             <field name="employee_id" options="{'no_create': True}" widget="many2one_avatar_user"/>
-                            <field name="sale_line_id" attrs="{'required': True}" options="{'no_create': True}"/>
+                            <field name="sale_line_id" attrs="{'required': True}" options="{'no_create': True}" context="{'search_default_order_id': sale_order_id}"/>
                             <field name="price_unit" widget="monetary" force_save="1" options="{'currency_field': 'currency_id'}"/>
                             <field name="display_cost" widget="monetary" options="{'currency_field': 'currency_id'}"/>
                             <field name="is_cost_changed" invisible="1"/>