diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 72204ba62..75292dae0 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -652,9 +652,10 @@ $(function () {
 
     // free-range price input auto-check checkbox
     $("[data-checked-onchange]").each(function() {
-        var checkbox = this;
+        var countInput = this;
         $("#" + this.getAttribute("data-checked-onchange")).on("change", function() {
-            checkbox.checked = true;
+            if (countInput.type === "checkbox") countInput.checked = true;
+            $(countInput).trigger("change")
         });
     });
 });