diff --git a/src/pretix/static/pretixcontrol/js/ui/editor.js b/src/pretix/static/pretixcontrol/js/ui/editor.js
index 75c3304cc4..3c3da6b8b2 100644
--- a/src/pretix/static/pretixcontrol/js/ui/editor.js
+++ b/src/pretix/static/pretixcontrol/js/ui/editor.js
@@ -286,7 +286,7 @@ var editor = {
         } else if (key.startsWith('meta:')) {
             return key.substr(5);
         }
-        return $('#toolbox-content option[value='+key+'], #toolbox-content option[data-old-value='+key+']').attr('data-sample') || '';
+        return $('#toolbox-content option[value='+key+'], #toolbox-content option[data-old-value='+key+']').attr('data-sample') || '???';
     },
 
     _load_page: function (page_number, dump) {