diff --git a/apps/showcase/doc/theming/styled/DarkModeToggleDoc.vue b/apps/showcase/doc/theming/styled/DarkModeToggleDoc.vue
index ccd33988b..e12a46c6a 100644
--- a/apps/showcase/doc/theming/styled/DarkModeToggleDoc.vue
+++ b/apps/showcase/doc/theming/styled/DarkModeToggleDoc.vue
@@ -44,7 +44,8 @@ app.use(PrimeVue, {
             code3: {
                 basic: `
 const toggleColorScheme() {
-    document.body.classList.toggle("my-app-dark");
+    const element = document.querySelector('html');
+    element.classList.toggle('my-app-dark');
 }
 `
             }