diff --git a/src/pretix/presale/templates/pretixpresale/fragment_modals.html b/src/pretix/presale/templates/pretixpresale/fragment_modals.html
index be95945e6b..07a29352c7 100644
--- a/src/pretix/presale/templates/pretixpresale/fragment_modals.html
+++ b/src/pretix/presale/templates/pretixpresale/fragment_modals.html
@@ -56,7 +56,6 @@
             <h3 id="cart-extend-modal-title">{% trans "Please let us know you're still there" %}</h3>
             <div>
                 <p id="cart-extend-modal-desc">
-                    {% trans "Your cart is about to expire. If you want to continue, please click here:" %}
                 </p>
                 <p><button class="btn btn-lg btn-primary">{% trans "Continue" %}</button></p>
             </div>
diff --git a/src/pretix/static/pretixpresale/js/ui/cart.js b/src/pretix/static/pretixpresale/js/ui/cart.js
index b34b298ee4..18845003d7 100644
--- a/src/pretix/static/pretixpresale/js/ui/cart.js
+++ b/src/pretix/static/pretixpresale/js/ui/cart.js
@@ -69,9 +69,15 @@ var cart = {
                 pad(diff_minutes.toString(), 2) + ':' + pad(diff_seconds.toString(), 2)
             );
         }
-        var can_extend_cart = diff_minutes < 3 && (diff_total_seconds < 0 || cart._deadline < cart._max_extend);
+        var already_expired = diff_total_seconds <= 0;
+        var can_extend_cart = diff_minutes < 3 && (already_expired || cart._deadline < cart._max_extend);
         $("#cart-extend-button").toggle(can_extend_cart);
-        if (can_extend_cart && diff_total_seconds < 45 && !cart._expiry_notified) cart.show_expiry_notification();
+        if (can_extend_cart && diff_total_seconds < 45) {
+            if (!cart._expiry_notified) cart.show_expiry_notification();
+            $("#cart-extend-modal-desc").text(already_expired
+                ? gettext("Your cart has expired. If you want to continue, please click here:")
+                : gettext("Your cart is about to expire. If you want to continue, please click here:"));
+        }
     },
 
     init: function () {