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 8cc97a1e026..06a8ea21c60 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
@@ -428,7 +428,7 @@ export class WebsitePreview extends Component {
     _cleanIframeFallback() {
         // Remove autoplay in all iframes urls so videos are not
         // playing in the background
-        const iframesEl = this.iframefallback.el.contentDocument.querySelectorAll("iframe");
+        const iframesEl = this.iframefallback.el.contentDocument.querySelectorAll('iframe[src]:not([src=""])');
         for (const iframeEl of iframesEl) {
             const url = new URL(iframeEl.src);
             url.searchParams.delete('autoplay');