diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 7783732d4..22077e0cc 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -421,7 +421,7 @@ $(function () {
                 }
             });
         }
-        if (!is_enabled && !$(".has-seating").length) {
+        if (!is_enabled && (!$(".has-seating").length || $("#seating-dummy-item-count").length)) {
             $("#btn-add-to-cart").prop("disabled", !is_enabled).popover({
                 'content': function () { return gettext("Please enter a quantity for one of the ticket types.") },
                 'placement': 'top',