diff --git a/addons/hr_expense/models/hr_expense.py b/addons/hr_expense/models/hr_expense.py
index 936701b79d3..50c0a136816 100644
--- a/addons/hr_expense/models/hr_expense.py
+++ b/addons/hr_expense/models/hr_expense.py
@@ -602,7 +602,7 @@ Or send your receipts at <a href="mailto:%(email)s?subject=Lunch%%20with%%20cust
                     Command.create({
                         'name': expense.employee_id.name + ': ' + expense.name.split('\n')[0][:64],
                         'quantity': expense.quantity or 1,
-                        'price_unit': expense.total_amount,
+                        'price_unit': expense.unit_amount if expense.unit_amount != 0 else expense.total_amount,
                         'product_id': expense.product_id.id,
                         'product_uom_id': expense.product_uom_id.id,
                         'analytic_distribution': expense.analytic_distribution,