diff --git a/AKModel/models.py b/AKModel/models.py
index f948da9bb771655b248f9617c298fae8b676b879..208974b82cd8c28033c17bda4334e4786bb6199b 100644
--- a/AKModel/models.py
+++ b/AKModel/models.py
@@ -383,7 +383,7 @@ class Event(models.Model):
             )
 
     def discretize_timeslots(self, *, slots_in_an_hour: float = 1.0) -> Iterable[TimeslotBlock]:
-        if DefaultSlot.objects.filter(event=self.event).exists():
+        if DefaultSlot.objects.filter(event=self).exists():
             # discretize default slots if they exists
             yield from merge_blocks(self.default_time_slots(slots_in_an_hour=SLOTS_IN_AN_HOUR))
         else: