diff --git a/src/app/shared/alert/alert.component.ts b/src/app/shared/alert/alert.component.ts
index 0fcce39d38..93535d2057 100644
--- a/src/app/shared/alert/alert.component.ts
+++ b/src/app/shared/alert/alert.component.ts
@@ -33,7 +33,7 @@ export class AlertComponent {
   /**
    * The alert type
    */
-  @Input() type: AlertType|string;
+  @Input() type: AlertType;
 
   /**
    * An event fired when alert is dismissed.