diff --git a/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html b/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
index f3a0d5567a..2fb59e598b 100644
--- a/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
+++ b/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
@@ -511,7 +511,7 @@
                 </button>
             </p>
         </form>
-        <dialog role="alertdialog" id="cart-extend-feedback-dialog" class="inline-dialog" aria-labelledby="cart-extend-feedback">
+        <dialog role="alertdialog" id="cart-extend-feedback-dialog" class="inline-dialog" aria-labelledby="cart-extend-feedback cart-deadline">
             <form method="dialog">
                 <p>
                     <span id="cart-extend-feedback" class="text-muted sr-only"></span>