diff --git a/addons/pos_sale_margin/report/sale_report.py b/addons/pos_sale_margin/report/sale_report.py
index 42bd9615d38..9053ea8a32b 100644
--- a/addons/pos_sale_margin/report/sale_report.py
+++ b/addons/pos_sale_margin/report/sale_report.py
@@ -9,5 +9,5 @@ class SaleReport(models.Model):
 
     def _fill_pos_fields(self, additional_fields):
         values = super()._fill_pos_fields(additional_fields)
-        values['margin'] = 'SUM(l.price_subtotal - l.total_cost / CASE COALESCE(pos.currency_rate, 0) WHEN 0 THEN 1.0 ELSE pos.currency_rate END)'
+        values['margin'] = 'SUM(l.price_subtotal - COALESCE(l.total_cost,0) / CASE COALESCE(pos.currency_rate, 0) WHEN 0 THEN 1.0 ELSE pos.currency_rate END)'
         return values