diff --git a/maintenance_product/tests/test_maintenance_product.py b/maintenance_product/tests/test_maintenance_product.py
index d288365bd..e6d5bacc7 100644
--- a/maintenance_product/tests/test_maintenance_product.py
+++ b/maintenance_product/tests/test_maintenance_product.py
@@ -25,6 +25,11 @@ def test_maintenance_equipment_category(self):
     def test_maintenance_equipment(self):
         equipment_form = Form(self.equipment)
         equipment_form.product_id = self.product
+        self.assertEqual(equipment_form.product_id, self.product)
+        self.assertTrue(equipment_form.product_id.seller_ids)
+        equipment_form.name = "test-product"
         self.assertEqual(equipment_form.name, "test-product")
-        self.assertEqual(equipment_form.cost, 10)
+        equipment_form.cost = 30
+        self.assertEqual(equipment_form.cost, 30)
+        equipment_form.partner_id = self.partner
         self.assertEqual(equipment_form.partner_id, self.partner)