diff --git a/cms/views.py b/cms/views.py
index 9a3ab8e..f908863 100644
--- a/cms/views.py
+++ b/cms/views.py
@@ -54,7 +54,7 @@ class PostViewSet(viewsets.ModelViewSet):
     filterset_fields = ['sites']
     search_fields = ['caption', 'short_text', 'details']
     ordering_fields = ['added_at', 'visible_until', 'visible_after']
-    ordering = ['added_at']
+    ordering = ['-added_at']
 
     @action(detail=False)
     def visible(self, request):
diff --git a/competition/models.py b/competition/models.py
index 140204d..5ed9344 100644
--- a/competition/models.py
+++ b/competition/models.py
@@ -285,7 +285,7 @@ class Series(models.Model):
     class Meta:
         verbose_name = 'séria'
         verbose_name_plural = 'série'
-        ordering = ['semester', '-order', ]
+        ordering = ['semester', 'order', ]
 
     semester = models.ForeignKey(
         Semester, verbose_name='semester', on_delete=models.CASCADE)