diff --git a/addons/sale_expense/models/sale_order.py b/addons/sale_expense/models/sale_order.py
index 196733bb1f9..ee27dc686f5 100644
--- a/addons/sale_expense/models/sale_order.py
+++ b/addons/sale_expense/models/sale_order.py
@@ -8,7 +8,7 @@ class SaleOrder(models.Model):
     _inherit = 'sale.order'
 
     expense_ids = fields.One2many('hr.expense', 'sale_order_id', string='Expenses', domain=[('state', '=', 'done')], readonly=True, copy=False)
-    expense_count = fields.Integer("# of Expenses", compute='_compute_expense_count')
+    expense_count = fields.Integer("# of Expenses", compute='_compute_expense_count', compute_sudo=True)
 
     @api.multi
     @api.depends('expense_ids')