diff --git a/addons/project/tests/test_project_report.py b/addons/project/tests/test_project_report.py
index 2e6f3fe594e..b85e509452b 100644
--- a/addons/project/tests/test_project_report.py
+++ b/addons/project/tests/test_project_report.py
@@ -19,7 +19,7 @@ class TestProjectReport(TestProjectCommon):
             {**rating_vals, 'rating': 4.25, 'res_id': self.task_2.id},
         ])
         self.assertEqual(self.task_1.rating_avg, 4.5)
-        self.assertEqual(self.task_1.rating_last_value, 5.0)
+        self.assertEqual(self.task_1.rating_last_value, 4.0)
 
         self.assertEqual(self.task_2.rating_avg, 4.25)
         self.assertEqual(self.task_2.rating_last_value, 4.25)
diff --git a/addons/rating/models/rating.py b/addons/rating/models/rating.py
index de9689ae9fa..a91149cae92 100644
--- a/addons/rating/models/rating.py
+++ b/addons/rating/models/rating.py
@@ -11,7 +11,7 @@ from odoo.modules.module import get_resource_path
 class Rating(models.Model):
     _name = "rating.rating"
     _description = "Rating"
-    _order = 'write_date desc'
+    _order = 'write_date desc, id desc'
     _rec_name = 'res_name'
 
     @api.model
diff --git a/addons/rating/models/rating_mixin.py b/addons/rating/models/rating_mixin.py
index 4cd9e384911..37716eaf860 100644
--- a/addons/rating/models/rating_mixin.py
+++ b/addons/rating/models/rating_mixin.py
@@ -35,7 +35,7 @@ class RatingMixin(models.AbstractModel):
             return
         self.env.cr.execute("""
             SELECT
-                array_agg(rating ORDER BY write_date DESC) AS "ratings",
+                array_agg(rating ORDER BY write_date DESC, id DESC) AS "ratings",
                 res_id as res_id
             FROM "rating_rating"
             WHERE