diff --git a/program/serializers.py b/program/serializers.py
index 70bfe6de9a98fcd3073bac2c9d6e0de695ce68af..5d377851b66c2ad208476289f0b1a8160773d91c 100644
--- a/program/serializers.py
+++ b/program/serializers.py
@@ -1016,7 +1016,7 @@ class NoteSerializer(serializers.ModelSerializer):
         links_data = validated_data.pop("links", [])
 
         # required
-        if "timeslot_id" in validated_data:
+        if "timeslot" in validated_data:
             validated_data["timeslot"] = validated_data.pop("timeslot")
         else:
             # TODO: Once we remove nested routes, this hack should be removed