diff --git a/ui-ngx/src/app/shared/models/alarm.models.ts b/ui-ngx/src/app/shared/models/alarm.models.ts
index c79935f23d..e629e1c574 100644
--- a/ui-ngx/src/app/shared/models/alarm.models.ts
+++ b/ui-ngx/src/app/shared/models/alarm.models.ts
@@ -21,7 +21,7 @@ import { EntityId } from '@shared/models/id/entity-id';
 import { TimePageLink } from '@shared/models/page/page-link';
 import { NULL_UUID } from '@shared/models/id/has-uuid';
 import { EntityType } from '@shared/models/entity-type.models';
-import { isString } from '@core/utils';
+import { CustomerId } from '@shared/models/id/customer-id';
 
 export enum AlarmSeverity {
   CRITICAL = 'CRITICAL',
@@ -87,6 +87,7 @@ export const alarmSeverityColors = new Map<AlarmSeverity, string>(
 
 export interface Alarm extends BaseData<AlarmId> {
   tenantId: TenantId;
+  customerId: CustomerId;
   type: string;
   originator: EntityId;
   severity: AlarmSeverity;
@@ -110,6 +111,7 @@ export interface AlarmDataInfo extends AlarmInfo {
 export const simulatedAlarm: AlarmInfo = {
   id: new AlarmId(NULL_UUID),
   tenantId: new TenantId(NULL_UUID),
+  customerId: new CustomerId(NULL_UUID),
   createdTime: new Date().getTime(),
   startTs: new Date().getTime(),
   endTs: 0,