diff --git a/addons/website/static/src/client_actions/website_preview/website_preview.js b/addons/website/static/src/client_actions/website_preview/website_preview.js
index b13ea32e837..401ea7ba89a 100644
--- a/addons/website/static/src/client_actions/website_preview/website_preview.js
+++ b/addons/website/static/src/client_actions/website_preview/website_preview.js
@@ -424,9 +424,9 @@ export class WebsitePreview extends Component {
      * the iframefallback content.
      */
     _cleanIframeFallback() {
-        // Remove autoplay in all media video iframes urls so videos are not
+        // Remove autoplay in all iframes urls so videos are not
         // playing in the background
-        const iframesEl = this.iframefallback.el.contentDocument.querySelectorAll(".media_iframe_video iframe");
+        const iframesEl = this.iframefallback.el.contentDocument.querySelectorAll("iframe");
         for (const iframeEl of iframesEl) {
             const url = new URL(iframeEl.src);
             url.searchParams.delete('autoplay');
diff --git a/addons/website_slides/__manifest__.py b/addons/website_slides/__manifest__.py
index be125b6fefb..59fc539da0e 100644
--- a/addons/website_slides/__manifest__.py
+++ b/addons/website_slides/__manifest__.py
@@ -72,7 +72,6 @@ Featuring
     'assets': {
         'web.assets_backend': [
             'website_slides/static/src/activity/**/*',
-            'website_slides/static/src/client_actions/website_preview/website_preview.js',
             'website_slides/static/src/slide_category_one2many_field.js',
             'website_slides/static/src/slide_category_list_renderer.js',
             'website_slides/static/src/scss/slide_views.scss',
diff --git a/addons/website_slides/static/src/client_actions/website_preview/website_preview.js b/addons/website_slides/static/src/client_actions/website_preview/website_preview.js
deleted file mode 100644
index 8b53487dd8b..00000000000
--- a/addons/website_slides/static/src/client_actions/website_preview/website_preview.js
+++ /dev/null
@@ -1,21 +0,0 @@
-/** @odoo-module **/
-
-import { patch } from 'web.utils';
-import { WebsitePreview } from '@website/client_actions/website_preview/website_preview';
-
-patch(WebsitePreview.prototype, 'website_slides_website_preview', {
-    /**
-     * @override
-     */
-    _cleanIframeFallback() {
-        // Remove autoplay in all youtube videos urls so videos are not playing
-        // in the background
-        const playersEl = this.iframefallback.el.contentDocument.querySelectorAll('[id^=youtube-player]');
-        for (const playerEl of playersEl) {
-            const url = new URL(playerEl.src);
-            url.searchParams.delete('autoplay');
-            playerEl.src = url.toString();
-        }
-        return this._super(...arguments);
-    }
-});