diff --git a/addons/sale_purchase/models/sale_order_line.py b/addons/sale_purchase/models/sale_order_line.py
index d2806315ab3..e566200d5ca 100644
--- a/addons/sale_purchase/models/sale_order_line.py
+++ b/addons/sale_purchase/models/sale_order_line.py
@@ -177,8 +177,13 @@ class SaleOrderLine(models.Model):
         else:
             product_ctx.update({'partner_id': purchase_order.partner_id.id})
 
+        product = self.product_id.with_context(**product_ctx)
+        name = product.display_name
+        if product.description_purchase:
+            name += '\n' + product.description_purchase
+
         return {
-            'name': self.product_id.with_context(**product_ctx).display_name,
+            'name': name,
             'product_qty': purchase_qty_uom,
             'product_id': self.product_id.id,
             'product_uom': self.product_id.uom_po_id.id,
diff --git a/addons/sale_purchase/tests/test_sale_purchase.py b/addons/sale_purchase/tests/test_sale_purchase.py
index bf79a3859a5..afd4d238064 100644
--- a/addons/sale_purchase/tests/test_sale_purchase.py
+++ b/addons/sale_purchase/tests/test_sale_purchase.py
@@ -227,6 +227,9 @@ class TestSalePurchase(TestCommonSalePurchaseNoChart):
         self.assertEqual(purchase_line2.product_qty, delta, "The quantity of the new PO line is the quantity added on the Sale Line, after first PO confirmation")
 
     def test_pol_description(self):
+        """
+        test cases when product names are different from how the vendor refers to, which is allowed
+        """
         service = self.env['product.product'].create({
             'name': 'Super Product',
             'type': 'service',