diff --git a/www/manager6/storage/PBSEdit.js b/www/manager6/storage/PBSEdit.js
index 99ce058e..841b5218 100644
--- a/www/manager6/storage/PBSEdit.js
+++ b/www/manager6/storage/PBSEdit.js
@@ -127,9 +127,9 @@ Ext.define('PVE.storage.PBSInputPanel', {
 
 	me.columnB = [
 	    {
-		xtype: 'textfield',
+		xtype: 'proxmoxtextfield',
 		name: 'fingerprint',
-		value: me.isCreate ? '' : undefined,
+		value: me.isCreate ? null : undefined,
 		fieldLabel: gettext('Fingerprint'),
 		emptyText: gettext('Server certificate SHA-256 fingerprint, required for self-signed certificates'),
 		regex: /[A-Fa-f0-9]{2}(:[A-Fa-f0-9]{2}){31}/,