diff --git a/addons/mass_mailing/static/src/js/mass_mailing_wysiwyg.js b/addons/mass_mailing/static/src/js/mass_mailing_wysiwyg.js
index dc15f2f85fd..2cd8a74d1e1 100644
--- a/addons/mass_mailing/static/src/js/mass_mailing_wysiwyg.js
+++ b/addons/mass_mailing/static/src/js/mass_mailing_wysiwyg.js
@@ -101,7 +101,7 @@ export class MassMailingWysiwyg extends Wysiwyg {
         const initialDropZone = this.$editable[0].querySelector('.o_mail_wrapper_td');
         const parsedHtml = new DOMParser().parseFromString(currentValue, "text/html");
         if (initialDropZone && !parsedHtml.querySelector('.o_mail_wrapper_td')) {
-            initialDropZone.replaceChildren(currentValue);
+            initialDropZone.replaceChildren(...parsedHtml.body.childNodes);
         } else {
             super.setValue(...arguments);
         }