diff --git a/addons/l10n_eu_oss/tests/test_oss.py b/addons/l10n_eu_oss/tests/test_oss.py
index 2be11c865de..6d5cde0a94d 100644
--- a/addons/l10n_eu_oss/tests/test_oss.py
+++ b/addons/l10n_eu_oss/tests/test_oss.py
@@ -9,7 +9,7 @@ from odoo.tests import tagged
 class OssTemplateTestCase(AccountTestInvoicingCommon):
 
     @classmethod
-    def load_specific_chart_template(cls, chart_template_ref):
+    def setUpClass(cls, chart_template_ref=None):
         try:
             super().setUpClass(chart_template_ref=chart_template_ref)
         except ValueError as e:
@@ -23,7 +23,7 @@ class TestOSSBelgium(OssTemplateTestCase):
 
     @classmethod
     def setUpClass(cls, chart_template_ref='be_comp'):
-        cls.load_specific_chart_template(chart_template_ref)
+        super().setUpClass(chart_template_ref)
         cls.company_data['company'].country_id = cls.env.ref('base.be')
         cls.company_data['company']._map_eu_taxes()
 
@@ -57,7 +57,7 @@ class TestOSSSpain(OssTemplateTestCase):
 
     @classmethod
     def setUpClass(cls, chart_template_ref='es_full'):
-        cls.load_specific_chart_template(chart_template_ref)
+        super().setUpClass(chart_template_ref)
         cls.company_data['company'].country_id = cls.env.ref('base.es')
         cls.company_data['company']._map_eu_taxes()
 
@@ -90,7 +90,7 @@ class TestOSSUSA(OssTemplateTestCase):
 
     @classmethod
     def setUpClass(cls, chart_template_ref=None):
-        cls.load_specific_chart_template(chart_template_ref)
+        super().setUpClass(chart_template_ref)
         cls.company_data['company'].country_id = cls.env.ref('base.us')
         cls.company_data['company']._map_eu_taxes()