diff --git a/src/app/modules/background/schedule/schedule-sync.service.ts b/src/app/modules/background/schedule/schedule-sync.service.ts
index 3a7e7693..9ddbf53b 100644
--- a/src/app/modules/background/schedule/schedule-sync.service.ts
+++ b/src/app/modules/background/schedule/schedule-sync.service.ts
@@ -38,6 +38,7 @@ import {
   CALENDAR_SYNC_ENABLED_KEY,
   CALENDAR_SYNC_SETTINGS_KEY,
 } from '../../settings/page/calendar-sync-settings-keys';
+import {filter} from 'rxjs/operators';
 
 @Injectable()
 export class ScheduleSyncService implements OnDestroy {
@@ -49,10 +50,12 @@ export class ScheduleSyncService implements OnDestroy {
     private durationFormatPipe: DurationPipe,
     private calendar: CalendarService,
   ) {
-    this.scheduleProvider.uuids$.subscribe(uuids => {
-      this.uuids = uuids;
-      void this.syncNativeCalendar();
-    });
+    this.scheduleProvider.uuids$
+      .pipe(filter(uuids => uuids?.length > 0))
+      .subscribe(uuids => {
+        this.uuids = uuids;
+        void this.syncNativeCalendar();
+      });
   }
 
   uuids: SCUuid[];