diff --git a/addons/purchase_stock/tests/test_stockvaluation.py b/addons/purchase_stock/tests/test_stockvaluation.py
index 630e8cc3768..a1a5ffeab4f 100644
--- a/addons/purchase_stock/tests/test_stockvaluation.py
+++ b/addons/purchase_stock/tests/test_stockvaluation.py
@@ -27,6 +27,8 @@ class TestStockValuation(TransactionCase):
             'name': 'Large Desk',
             'standard_price': 1299.0,
             'list_price': 1799.0,
+            # Ignore tax calculations for these tests.
+            'supplier_taxes_id': False,
             'type': 'product',
         })
         Account = cls.env['account.account']