diff --git a/public/js/plugin/FhcAlert.js b/public/js/plugin/FhcAlert.js
index b079bf98e..e823faaf0 100644
--- a/public/js/plugin/FhcAlert.js
+++ b/public/js/plugin/FhcAlert.js
@@ -214,9 +214,9 @@ export default {
 						header: 'Achtung',
 						message: 'Möchten Sie sicher löschen?',
 						acceptLabel: 'Löschen',
-						acceptClass: 'btn btn-danger',
+						acceptClass: 'p-button-danger',
 						rejectLabel: 'Abbrechen',
-						rejectClass: 'btn btn-outline-secondary',
+						rejectClass: 'p-button-secondary',
 						accept() {
 							resolve(true);
 						},