diff --git a/zapisy/apps/notifications/assets/components/Widget.vue b/zapisy/apps/notifications/assets/components/Widget.vue
index 9575ac1d40..d121340a96 100644
--- a/zapisy/apps/notifications/assets/components/Widget.vue
+++ b/zapisy/apps/notifications/assets/components/Widget.vue
@@ -79,7 +79,7 @@ export default class NotificationsComponent extends Vue {
       });
   }
 
-  deleteOne(i: number): Promise<void> {
+  deleteOne(i: string): Promise<void> {
     axios.defaults.xsrfCookieName = "csrftoken";
     axios.defaults.xsrfHeaderName = "X-CSRFToken";