diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 3ca92fc5b..415c0adaf 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -456,7 +456,7 @@ $(function () {
     }
     $("form:has(#btn-add-to-cart)").on("submit", function(e) {
         if (
-            (this.classList.contains("has-seating") && this.querySelector("pretix-seating-checkout-button button")) ||
+            this.querySelector("pretix-seating-checkout-button button") ||
             this.querySelector("input[type=checkbox]:checked, input[type=radio]:checked") ||
             [...this.querySelectorAll(".input-item-count:not([type=hidden])")].some(input => input.value && input.value !== "0") // TODO: seating adds a hidden seating-dummy-item-count, which is not useful and should at some point be removed
         ) {