diff --git a/vendor/symposion/schedule/models.py b/vendor/symposion/schedule/models.py
index fd6a17a4..af5e025c 100644
--- a/vendor/symposion/schedule/models.py
+++ b/vendor/symposion/schedule/models.py
@@ -184,7 +184,7 @@ class Slot(models.Model):
         select_related = ('kind__schedule__section', 'day')
 
     class Meta:
-        ordering = ["day", "start", "end"]
+        ordering = ["day", "kind__schedule", "start", "end"]
         verbose_name = _("slot")
         verbose_name_plural = _("slots")