diff --git a/src/services/NotificationService.ts b/src/services/NotificationService.ts
index 51e56af..2f6f6a5 100644
--- a/src/services/NotificationService.ts
+++ b/src/services/NotificationService.ts
@@ -102,7 +102,8 @@ export class NotificationService {
    * @param shuttleId
    * @param stopId
    */
-  public isNotificationScheduled({ deviceId, shuttleId, stopId }: ScheduledNotificationData) {
+  public isNotificationScheduled({ deviceId, shuttleId, stopId }: ScheduledNotificationData): boolean {
+    return false;
   }
 
   public cancelAllNotifications(deviceId: string) {