diff --git a/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html b/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
index 8b09753c27..e015049631 100644
--- a/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
+++ b/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
@@ -519,7 +519,7 @@
         <dialog role="alertdialog" id="cart-extend-confirmation-dialog" class="inline-dialog" aria-labelledby="cart-deadline">
             <form method="dialog">
                 <p>
-                    <button class="btn btn-success" autofocus value="OK">
+                    <button class="btn btn-success" value="OK">
                         <span role="img" aria-label="{% trans "OK" %}.">
                             {% icon "check" %}
                         </span>