diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 8dd6f3c54f..f4f66f70c4 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -716,7 +716,7 @@ $(function () {
     // free-range price input auto-check checkbox/set count-input to 1 if 0
     $("[data-checked-onchange]").each(function() {
         var countInput = this;
-        $("#" + this.getAttribute("data-checked-onchange")).on("change", function() {
+        $("#" + this.getAttribute("data-checked-onchange")).on("input", function() {
             if (countInput.type === "checkbox") {
                 if (countInput.checked) return;
                 countInput.checked = true;