diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 90cefb3a79..d914fb4a13 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -388,13 +388,13 @@ $(function () {
         var source_label = get_label_text_for_id(source.id);
 
         var $first_ticket_form = $(".questions-form").first().find("[data-addonidx=0]");
-        var $candidates = $first_ticket_form.find(source.tagName + ":not([type='checkbox'], [type='radio'])");
+        var $candidates = $first_ticket_form.find(source.tagName + ":not([type='checkbox'], [type='radio'], [type='hidden'])");
         var $match = $candidates.filter(function() {
             return (
                 this.id.endsWith(source.id.substring(3))
                 || (this.placeholder && this.placeholder === source.placeholder)
                 || (this.placeholder && this.placeholder === source_label)
-                || (source_label && get_label_text_for_id(this.id) === source_label)
+                || (source_label && this.id && get_label_text_for_id(this.id) === source_label)
             );
         }).first();
         $match.val(this.value).trigger("change");