diff --git a/src/govuk/components/checkboxes/checkboxes.mjs b/src/govuk/components/checkboxes/checkboxes.mjs
index 06b91da0d8..57c0374a12 100644
--- a/src/govuk/components/checkboxes/checkboxes.mjs
+++ b/src/govuk/components/checkboxes/checkboxes.mjs
@@ -6,7 +6,7 @@ export class Checkboxes {
    * @param {Element} $module - HTML element to use for checkboxes
    */
   constructor ($module) {
-    if (!($module instanceof HTMLElement)) {
+    if (!($module instanceof HTMLElement) || !document.body.classList.contains('govuk-frontend-supported')) {
       return this
     }