diff --git a/src/Utils.js b/src/Utils.js
index a2c4269..e05afe5 100644
--- a/src/Utils.js
+++ b/src/Utils.js
@@ -1754,7 +1754,7 @@ Ext.define('Proxmox.Utils', {
         me.httpUrlRegex = new RegExp(HTTP_URL_REGEX);
 
         // Same as SAFE_ID_REGEX in proxmox-schema
-        me.safeIdRegex = /^(?:[A-Za-z0-9_][A-Za-z0-9._\-\\]*)$/;
+        me.safeIdRegex = /^(?:[A-Za-z0-9_][A-Za-z0-9._-]*)$/;
     },
 });