diff --git a/lib/model/callback_models/create_location_alarm_request.dart b/lib/model/callback_models/create_location_alarm_request.dart
index dfbb8fc..764c1d8 100644
--- a/lib/model/callback_models/create_location_alarm_request.dart
+++ b/lib/model/callback_models/create_location_alarm_request.dart
@@ -2,9 +2,9 @@ import '../location.dart';
 import 'create_alarm_request.dart';
 
 class CreateLocationAlarmRequest extends CreateAlarmRequest {
-  final Location location;
+  final Location? location;
 
-  final int radiusMeters;
+  final int? radiusMeters;
 
   const CreateLocationAlarmRequest({
     required this.location,
diff --git a/lib/model/callback_models/create_time_alarm_request.dart b/lib/model/callback_models/create_time_alarm_request.dart
index a2c1e19..e897b02 100644
--- a/lib/model/callback_models/create_time_alarm_request.dart
+++ b/lib/model/callback_models/create_time_alarm_request.dart
@@ -1,7 +1,7 @@
 import 'create_alarm_request.dart';
 
 class CreateTimeAlarmRequest extends CreateAlarmRequest {
-  final DateTime triggerAt;
+  final DateTime? triggerAt;
 
   CreateTimeAlarmRequest({required this.triggerAt});
 }