diff --git a/src/pretix/static/pretixcontrol/js/ui/main.js b/src/pretix/static/pretixcontrol/js/ui/main.js
index 9d618ce4f5..5b971ca134 100644
--- a/src/pretix/static/pretixcontrol/js/ui/main.js
+++ b/src/pretix/static/pretixcontrol/js/ui/main.js
@@ -866,6 +866,7 @@ $(function () {
                 height: 196
             }
         );
+        $div.append($(this).attr("data-qrcode").slice(10) + "…<br>");
         $div.append(gettext("Click to close"));
         $div.slideDown(200);
         $div.click(function (e) {