diff --git a/TODO b/TODO
index c35a734..448877b 100644
--- a/TODO
+++ b/TODO
@@ -1,6 +1,5 @@
 # À faire
 
-  * Test API sur l'ordre de tri des date pour les Timeline
   * étudier la possibilité à l'utilisateur, via des variables d'environnement, de configurer un email, une autre BDD, etc.
 
 ## Dépôt / code
diff --git a/collection/games/tests/test_api.py b/collection/games/tests/test_api.py
index bfb3122..9250569 100644
--- a/collection/games/tests/test_api.py
+++ b/collection/games/tests/test_api.py
@@ -3,7 +3,7 @@ from django.urls import reverse
 from games.models import Game, Platform, Timeline
 from rest_framework import status
 from rest_framework.test import APITestCase, force_authenticate
-from datetime import date
+from datetime import date, datetime
 import json
 
 
@@ -154,5 +154,35 @@ class TimelineTest(APITestCase):
         self.assertEqual(Timeline.objects.count(), 2)
 
     def test_sorted_game_timeline(self):
-        # TODO: Check descending date order.
-        pass
+        """
+        Check that timelines are sorted by date in descending order.
+        """
+        # Prepare timeline with some different dates
+        console = Platform.objects.create(name='BestPlatform4Ever')
+        game = Game.objects.create(
+            name='Symptomatic',
+            collection=console,
+            status='created')
+        game.status = 'beaten'
+        game.save()
+        game.status = 'completed'
+        game.save()
+        # Change date from Timelines
+        Timeline.objects.filter(status='created').update(
+            date='2017-03-01')
+        Timeline.objects.filter(status='completed').update(
+            date='2017-03-05')
+        Timeline.objects.filter(status='beaten').update(
+            date='2017-03-07')
+        # Check dates
+        url = reverse('game_timeline-list')
+        self.client.force_authenticate(user=self.superuser)
+        response = self.client.get(url, format='json')
+        # sorted_timelines are datetime.date
+        sorted_timelines = list(
+            Timeline.objects.all().order_by('-date').values_list(
+                'date', flat=True))
+        # dates are string date, format %Y-%m-%d
+        dates = [x.get('date') for x in json.loads(response.content)]
+        da = [datetime.date(datetime.strptime(x, '%Y-%m-%d')) for x in dates]
+        self.assertEqual(da, sorted_timelines)