diff --git a/odoo/addons/test_new_api/tests/test_properties.py b/odoo/addons/test_new_api/tests/test_properties.py
index 2574f82cba8..f2bb8df2534 100644
--- a/odoo/addons/test_new_api/tests/test_properties.py
+++ b/odoo/addons/test_new_api/tests/test_properties.py
@@ -128,7 +128,7 @@ class PropertiesCase(TransactionCase):
 
         expected = self.discussion_2.attributes_definition
         for property_definition in expected:
-            property_definition['value'] = None
+            property_definition['value'] = False
 
         self.assertEqual(self.message_3.read(['attributes'])[0]['attributes'], expected)
         self.assertEqual(self.message_3.attributes, expected)
@@ -489,7 +489,7 @@ class PropertiesCase(TransactionCase):
                 "type": "char",
                 "string": "Color Code",
                 "default": "blue",
-                "value": None,
+                "value": False,
             }, {
                 "name": "moderator_partner_id",
                 "type": "many2one",
@@ -557,7 +557,7 @@ class PropertiesCase(TransactionCase):
                 'type': 'many2one',
                 'comodel': 'res.partner',
                 'default': (partner.id, partner.display_name),
-                'value': None,
+                'value': False,
             }],
         )
         partner.unlink()
@@ -567,8 +567,8 @@ class PropertiesCase(TransactionCase):
                 'name': 'moderator_partner_id',
                 'type': 'many2one',
                 'comodel': 'res.partner',
-                'default': None,
-                'value': None,
+                'default': False,
+                'value': False,
             }],
         )
 
@@ -1054,7 +1054,7 @@ class PropertiesCase(TransactionCase):
                     'string': 'Partner',
                     'type': 'many2one',
                     'comodel': 'test_new_api.partner',
-                    'value': None,
+                    'value': False,
                 }],
                 msg='Should take the new definition when changing the definition record',
             )
@@ -1115,7 +1115,7 @@ class PropertiesCase(TransactionCase):
                 'type': 'many2one',
                 'string': 'Partner',
                 'comodel': 'test_new_api.partner',
-                'value': None,
+                'value': False,
             }],
         )
 
diff --git a/odoo/fields.py b/odoo/fields.py
index fed9f39de98..f6a88aefc4a 100644
--- a/odoo/fields.py
+++ b/odoo/fields.py
@@ -3347,7 +3347,7 @@ class Properties(Field):
         for record in records:
             record[self.name] = self._add_default_values(
                 record.env,
-                {self.name: False, self.definition_record: record[self.definition_record]},
+                {self.name: record[self.name], self.definition_record: record[self.definition_record]},
             )
 
     def _add_default_values(self, env, values):
@@ -3390,9 +3390,8 @@ class Properties(Field):
 
         for properties_value in properties_list_values:
             if properties_value.get('value') is None:
-                default = properties_value.get('default')
-                if default:
-                    properties_value['value'] = default
+                default = properties_value.get('default') or False
+                properties_value['value'] = default
 
         return properties_list_values
 
@@ -3428,7 +3427,7 @@ class Properties(Field):
                         # protect from access error message, show an empty name
                         property_definition[value_key] = (property_value, None)
                     except MissingError:
-                        property_definition[value_key] = None
+                        property_definition[value_key] = False
 
                 elif property_type == 'many2many' and property_value and is_list_of(property_value, int):
                     property_definition[value_key] = []
@@ -3509,7 +3508,8 @@ class Properties(Field):
                 # E.G. convert zero to False
                 property_value = bool(property_value)
 
-            elif property_type == 'char' and not isinstance(property_value, str):
+            elif property_type == 'char' and not isinstance(property_value, str) \
+                    and property_value is not None:
                 property_value = False
 
             elif property_value and property_type == 'selection':
@@ -3586,7 +3586,7 @@ class Properties(Field):
 
         dict_value = {}
         for property_definition in values_list:
-            property_value = property_definition.get('value')
+            property_value = property_definition.get('value') or False
             property_type = property_definition.get('type')
             property_model = property_definition.get('comodel')