diff --git a/program/serializers.py b/program/serializers.py
index c7a873d61b5be02430ec22cb28088dc8342d1a34..13da35b83908fff29ab1cda692b80da3e90793f9 100644
--- a/program/serializers.py
+++ b/program/serializers.py
@@ -1333,6 +1333,11 @@ class CalendarSchemaSerializer(serializers.Serializer):
                 "updated_by",
             ]
 
+    class CalendarTimeslotSerializer(serializers.ModelSerializer):  #
+        class Meta:
+            model = TimeSlot
+            exclude = ["memo"]
+
     class Wrapper:
         def __init__(self, program: list[ProgramEntry]):
             self.program = program
@@ -1403,7 +1408,7 @@ class CalendarSchemaSerializer(serializers.Serializer):
             return LinkType.objects.all()
 
     shows = CalendarShowSerializer(many=True)
-    timeslots = TimeSlotSerializer(many=True)
+    timeslots = CalendarTimeslotSerializer(many=True)
     profiles = ProfileSerializer(many=True)
     categories = CategorySerializer(many=True)
     funding_categories = FundingCategorySerializer(many=True)