diff --git a/addons/pos_sale/report/sale_report.py b/addons/pos_sale/report/sale_report.py
index cf3ec8f4723..d8399ee4b78 100644
--- a/addons/pos_sale/report/sale_report.py
+++ b/addons/pos_sale/report/sale_report.py
@@ -24,7 +24,7 @@ class SaleReport(models.Model):
 
     def _select_pos(self):
         select_ = """
-            MIN(l.id) AS id,
+            -MIN(l.id) AS id,
             l.product_id AS product_id,
             t.uom_id AS product_uom,
             SUM(l.qty) AS product_uom_qty,
diff --git a/addons/pos_sale/tests/test_pos_sale_report.py b/addons/pos_sale/tests/test_pos_sale_report.py
index 1c1509ca4d4..2f27d3e9723 100644
--- a/addons/pos_sale/tests/test_pos_sale_report.py
+++ b/addons/pos_sale/tests/test_pos_sale_report.py
@@ -31,8 +31,8 @@ class TestPoSSaleReport(TestPoSCommon):
 
         session.action_pos_session_closing_control()
 
-        # Orders are reversed, so reports[0] will correspond to the second order
-        reports = self.env['sale.report'].sudo().search([('product_id', '=', self.product0.id)], order='id desc', limit=2)
+        # PoS Orders have negative IDs to avoid conflict, so reports[0] will correspond to the newest order
+        reports = self.env['sale.report'].sudo().search([('product_id', '=', self.product0.id)], order='id', limit=2)
         self.assertEqual(reports[0].weight, 3)
         self.assertEqual(reports[0].volume, 4)
         self.assertEqual(reports[1].weight, 18)