diff --git a/account_ecotax/models/product_template.py b/account_ecotax/models/product_template.py
index 13ff903ff..52df82ce7 100644
--- a/account_ecotax/models/product_template.py
+++ b/account_ecotax/models/product_template.py
@@ -23,12 +23,13 @@ class ProductTemplate(models.Model):
     fixed_ecotax = fields.Float(
         compute="_compute_ecotax",
         help="Fixed ecotax of the Ecotax Classification",
+        store=True,
     )
     weight_based_ecotax = fields.Float(
         compute="_compute_ecotax",
         help="Ecotax value :\n"
-        "product weight * ecotax coef of "
-        "Ecotax Classification",
+        "product weight * ecotax coef of Ecotax Classification",
+        store=True,
     )
 
     @api.depends(
diff --git a/account_ecotax/tests/test_ecotax.py b/account_ecotax/tests/test_ecotax.py
index c002ab77c..86d88ddd5 100644
--- a/account_ecotax/tests/test_ecotax.py
+++ b/account_ecotax/tests/test_ecotax.py
@@ -14,7 +14,7 @@
 @tagged("-at_install", "post_install")
 class TestInvoiceEcotaxe(AccountTestInvoicingCommon):
     @classmethod
-    def setUpClass(cls, chart_template_ref="l10n_fr.l10n_fr_pcg_chart_template"):
+    def setUpClass(cls, chart_template_ref=None):
         super().setUpClass(chart_template_ref)
         cls.env = cls.env(context=dict(cls.env.context, tracking_disable=True))