diff --git a/addons/purchase/models/purchase_order_line.py b/addons/purchase/models/purchase_order_line.py
index 00a7ee26380..77d2dd85dfb 100644
--- a/addons/purchase/models/purchase_order_line.py
+++ b/addons/purchase/models/purchase_order_line.py
@@ -287,7 +287,7 @@ class PurchaseOrderLine(models.Model):
         self.product_uom = self.product_id.uom_po_id or self.product_id.uom_id
         product_lang = self.product_id.with_context(
             lang=get_lang(self.env, self.partner_id.lang).code,
-            partner_id=self.partner_id.id,
+            partner_id=None,
             company_id=self.company_id.id,
         )
         self.name = self._get_product_purchase_description(product_lang)
@@ -364,6 +364,8 @@ class PurchaseOrderLine(models.Model):
             # record product names to avoid resetting custom descriptions
             default_names = []
             vendors = line.product_id._prepare_sellers({})
+            product_ctx = {'seller_id': None, 'partner_id': None, 'lang': get_lang(line.env, line.partner_id.lang).code}
+            default_names.append(line._get_product_purchase_description(line.product_id.with_context(product_ctx)))
             for vendor in vendors:
                 product_ctx = {'seller_id': vendor.id, 'lang': get_lang(line.env, line.partner_id.lang).code}
                 default_names.append(line._get_product_purchase_description(line.product_id.with_context(product_ctx)))
diff --git a/addons/purchase/tests/test_purchase.py b/addons/purchase/tests/test_purchase.py
index 563f7967866..572338918d5 100644
--- a/addons/purchase/tests/test_purchase.py
+++ b/addons/purchase/tests/test_purchase.py
@@ -572,3 +572,48 @@ class TestPurchase(AccountTestInvoicingCommon):
 
         self.assertEqual(po1.order_line[0].price_unit, 100)
         self.assertEqual(po1.order_line[0].discount, 30)
+
+    def test_orderline_supplierinfo_description(self):
+        supplierinfo_vals = {
+            'partner_id': self.partner_a.id,
+            'min_qty': 1,
+            'product_id': self.product_a.id,
+            'product_tmpl_id': self.product_a.product_tmpl_id.id,
+        }
+
+        self.env["product.supplierinfo"].create([
+            {
+                **supplierinfo_vals,
+                'price': 10,
+                'product_name': 'Name 1',
+                'product_code': 'Code 1',
+            },
+            {
+                **supplierinfo_vals,
+                'price': 20,
+                'product_name': 'Name 2',
+                'product_code': 'Code 2',
+            },
+            {
+                'partner_id': self.partner_a.id,
+                'min_qty': 1,
+                'product_id': self.product_b.id,
+                'product_tmpl_id': self.product_b.product_tmpl_id.id,
+                'price': 5,
+                'product_name': 'Name 3',
+                'product_code': 'Code 3',
+            }
+        ])
+
+        po_form = Form(self.env['purchase.order'])
+        po_form.partner_id = self.partner_a
+        with po_form.order_line.new() as line:
+            line.product_id = self.product_a
+            line.product_qty = 1
+        po = po_form.save()
+        self.assertEqual(po.order_line.name, '[Code 1] Name 1')
+
+        with po_form.order_line.edit(0) as line:
+            line.product_id = self.product_b
+        po = po_form.save()
+        self.assertEqual(po.order_line.name, '[Code 3] Name 3')