diff --git a/addons/payment/tests/utils.py b/addons/payment/tests/utils.py
index 2e36779def8..31544ce634e 100644
--- a/addons/payment/tests/utils.py
+++ b/addons/payment/tests/utils.py
@@ -12,13 +12,6 @@ _logger = logging.getLogger(__name__)
 
 
 class PaymentTestUtils(AccountTestInvoicingCommon):
-
-    @classmethod
-    def setUpClass(cls, chart_template_ref=None):
-        super().setUpClass(chart_template_ref=chart_template_ref)
-
-        cls.icp_base_url = cls.env['ir.config_parameter'].get_param('web.base.url')
-
     def _generate_test_access_token(self, *values):
         """ Generate an access token based on the provided values for testing purposes.
 
@@ -37,7 +30,7 @@ class PaymentTestUtils(AccountTestInvoicingCommon):
         return access_token
 
     def _build_url(self, route):
-        return urls.url_join(self.icp_base_url, route)
+        return urls.url_join(self.base_url(), route)
 
     def _extract_values_from_html_form(self, html_form):
         """ Extract the transaction rendering values from an HTML form.
diff --git a/addons/payment_buckaroo/tests/test_buckaroo.py b/addons/payment_buckaroo/tests/test_buckaroo.py
index b4dec515497..4c3e4f567e3 100644
--- a/addons/payment_buckaroo/tests/test_buckaroo.py
+++ b/addons/payment_buckaroo/tests/test_buckaroo.py
@@ -16,6 +16,9 @@ from odoo.addons.payment_buckaroo.tests.common import BuckarooCommon
 class BuckarooTest(BuckarooCommon, PaymentHttpCommon):
 
     def test_redirect_form_values(self):
+        self.patch(self, 'base_url', lambda: 'http://127.0.0.1:8069')
+        self.patch(type(self.env['base']), 'get_base_url', lambda _: 'http://127.0.0.1:8069')
+
         return_url = self._build_url(BuckarooController._return_url)
         expected_values = {
             'Brq_websitekey': self.buckaroo.buckaroo_website_key,
diff --git a/addons/payment_sips/tests/test_sips.py b/addons/payment_sips/tests/test_sips.py
index 2bf57434d53..51a91ef1db0 100644
--- a/addons/payment_sips/tests/test_sips.py
+++ b/addons/payment_sips/tests/test_sips.py
@@ -45,6 +45,9 @@ class SipsTest(SipsCommon, PaymentHttpCommon):
             "Payulatam: transaction reference wasn't correctly singularized.")
 
     def test_redirect_form_values(self):
+        self.patch(self, 'base_url', lambda: 'http://127.0.0.1:8069')
+        self.patch(type(self.env['base']), 'get_base_url', lambda _: 'http://127.0.0.1:8069')
+
         tx = self.create_transaction(flow="redirect")
 
         with mute_logger('odoo.addons.payment.models.payment_transaction'):
diff --git a/odoo/tests/common.py b/odoo/tests/common.py
index 15e4119154e..a0b69d29bd9 100644
--- a/odoo/tests/common.py
+++ b/odoo/tests/common.py
@@ -71,7 +71,6 @@ _logger = logging.getLogger(__name__)
 # The odoo library is supposed already configured.
 ADDONS_PATH = odoo.tools.config['addons_path']
 HOST = '127.0.0.1'
-PORT = odoo.tools.config['http_port']
 # Useless constant, tests are aware of the content of demo data
 ADMIN_USER_ID = odoo.SUPERUSER_ID
 
@@ -1670,7 +1669,7 @@ class HttpCase(TransactionCase):
 
     @classmethod
     def base_url(cls):
-        return f"http://{HOST}:{PORT}"
+        return f"http://{HOST}:{odoo.tools.config['http_port']}"
 
     def start_tour(self, url_path, tour_name, step_delay=None, **kwargs):
         """Wrapper for `browser_js` to start the given `tour_name` with the