diff --git a/odoo/addons/base/models/res_config.py b/odoo/addons/base/models/res_config.py
index 520af598eb1..9b9c76d2189 100644
--- a/odoo/addons/base/models/res_config.py
+++ b/odoo/addons/base/models/res_config.py
@@ -559,12 +559,8 @@ class ResConfigSettings(models.TransientModel, ResConfigModuleInstallationMixin)
         for name, icp in classified['config']:
             field = self._fields[name]
             value = self[name]
-            current_value = current_settings[name]
-            if not field.relational and value == current_value:
-                # pre-check before the value is formatted
-                # because the values in current_settings are
-                # in field format, not in str/False parameter format
-                continue
+            current_value = IrConfigParameter.get_param(icp)
+
             if field.type == 'char':
                 # storing developer keys as ir.config_parameter may lead to nasty
                 # bugs when users leave spaces around them
@@ -575,7 +571,7 @@ class ResConfigSettings(models.TransientModel, ResConfigModuleInstallationMixin)
                 # value is a (possibly empty) recordset
                 value = value.id
 
-            if current_value == value:
+            if current_value == str(value) or current_value == value:
                 continue
             IrConfigParameter.set_param(icp, value)
 
diff --git a/odoo/addons/test_testing_utilities/ir.model.access.csv b/odoo/addons/test_testing_utilities/ir.model.access.csv
index 5f7c8a1777c..a8a46acb17a 100644
--- a/odoo/addons/test_testing_utilities/ir.model.access.csv
+++ b/odoo/addons/test_testing_utilities/ir.model.access.csv
@@ -27,3 +27,4 @@ access_ttu_product,access_ttu_product,model_ttu_product,base.group_user,1,0,0,0
 access_ttu_root,access_ttu_root,model_ttu_root,base.group_user,1,0,0,0
 access_ttu_child,access_ttu_child,model_ttu_child,base.group_user,1,0,0,0
 access_ttu_grandchild,access_ttu_grandchild,model_ttu_grandchild,base.group_user,1,0,0,0
+access_res_config_test,access_res_config_test,test_testing_utilities.model_res_config_test,base.group_user,1,0,0,0
diff --git a/odoo/addons/test_testing_utilities/models.py b/odoo/addons/test_testing_utilities/models.py
index e5777ab801b..2c6207d0335 100644
--- a/odoo/addons/test_testing_utilities/models.py
+++ b/odoo/addons/test_testing_utilities/models.py
@@ -314,3 +314,18 @@ class O2MChangesChildrenLines(models.Model):
     parent_id = fields.Many2one('o2m_changes_children')
     v = fields.Integer()
     vv = fields.Integer()
+
+class ResConfigTest(models.Model):
+    _inherit = 'res.config.settings'
+
+    _name = 'res.config.test'
+    _description = 'Config test'
+
+    param1 = fields.Integer(
+        string='Test parameter 1',
+        config_parameter='resConfigTest.parameter1',
+        default=1000)
+
+    param2 = fields.Many2one(
+        'res.config',
+        config_parameter="resConfigTest.parameter2")
diff --git a/odoo/addons/test_testing_utilities/tests/__init__.py b/odoo/addons/test_testing_utilities/tests/__init__.py
index 78398a30bce..ddbdacb243c 100644
--- a/odoo/addons/test_testing_utilities/tests/__init__.py
+++ b/odoo/addons/test_testing_utilities/tests/__init__.py
@@ -3,3 +3,4 @@ from . import test_methods
 from . import test_lxml
 from . import test_form_impl
 from . import test_xml_tools
+from . import test_res_config
diff --git a/odoo/addons/test_testing_utilities/tests/test_res_config.py b/odoo/addons/test_testing_utilities/tests/test_res_config.py
new file mode 100644
index 00000000000..3cfaac18c47
--- /dev/null
+++ b/odoo/addons/test_testing_utilities/tests/test_res_config.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from unittest.mock import patch
+from odoo.tests.common import TransactionCase
+
+class TestResConfig(TransactionCase):
+
+    def test_00_add_parameter_with_default_value(self):
+        """ Check if parameters with a default value are saved in the ir_config_parameter table """
+
+        self.env['res.config.test'].create({}).execute()
+        self.assertEqual(self.env['ir.config_parameter'].sudo().get_param('resConfigTest.parameter1'), str(1000),
+            "The parameter is not saved with its default value")
+
+        with patch('odoo.addons.base.models.ir_config_parameter.IrConfigParameter.set_param') as set_param_mock:
+            self.env['res.config.test'].create({}).execute()
+
+        set_param_mock.assert_not_called()