diff --git a/AKModel/models.py b/AKModel/models.py
index e614ea0b540bf9a3dae51baa59cf8233e1e636c0..121a4ac01f6651741d9ab90c3ff78b0f7e8df3dc 100644
--- a/AKModel/models.py
+++ b/AKModel/models.py
@@ -264,7 +264,7 @@ class AK(models.Model):
 
     @property
     def durations_list(self):
-        return ", ".join(str(slot.duration) for slot in self.akslot_set.all())
+        return ", ".join(str(slot.duration_simplified) for slot in self.akslot_set.all())
 
     @property
     def wish(self):
@@ -342,7 +342,7 @@ class AKSlot(models.Model):
         Display duration of slot in format hours:minutes, e.g. 1.5 -> "1:30"
         """
         hours, minutes = divmod(self.duration * 60, 60)
-        return f"{hours}:{minutes:2.0f}"
+        return f"{hours}:{minutes:02.0f}"
 
     @property
     def start_simplified(self):