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 b965a5c5211..4219b79493f 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
@@ -353,7 +353,7 @@ export class WebsitePreview extends Component {
                     additionalContext: {
                         params: {
                             website_id: this.websiteId,
-                            url_return: '/[lang]',
+                            url_return: $.deparam(href).url_return,
                         },
                     },
                 });
diff --git a/addons/website/views/website_templates.xml b/addons/website/views/website_templates.xml
index 8b3a99961e7..6f4708115fe 100644
--- a/addons/website/views/website_templates.xml
+++ b/addons/website/views/website_templates.xml
@@ -1929,6 +1929,8 @@
 </template>
 
 <template id="language_selector_add_language">
+    <!-- When clicked from the iframe preview in backend, the click will be
+    prevented to directly call the action in the top window -->
     <a t-attf-class="o_add_language d-none #{dropdown and 'd-sm-block dropdown-item' or 'd-sm-inline-block list-inline-item'}"
        groups="website.group_website_restricted_editor"
        t-attf-href="/web#action=base.action_view_base_language_install&amp;website_id=#{website.id if website else ''}&amp;url_return=#{quote_plus(url_for('', '[lang]') + '?' + keep_query())}">