diff --git a/addons/web/static/src/js/public/public_root.js b/addons/web/static/src/js/public/public_root.js
index 31b39e97abb9389f0d7ae4525883ce2e21c73cf7..a567734546b31c290441cfeb24e78b87c31c43b4 100644
--- a/addons/web/static/src/js/public/public_root.js
+++ b/addons/web/static/src/js/public/public_root.js
@@ -19,19 +19,6 @@ function getLang() {
 var lang = utils.get_cookie('frontend_lang') || getLang(); // FIXME the cookie value should maybe be in the ctx?
 var localeDef = ajax.loadJS('/web/webclient/locale/' + lang.replace('-', '_'));
 
-// In the frontend, there is no CrashManager instance. Errors are displayed in
-// the console. However, we do want to do the same as the backend for Promise
-// unhandled rejections.
-window.addEventListener('unhandledrejection', function (ev) {
-    if (!ev.reason || !(ev.reason instanceof Error)) {
-        // the rejection is not due to an Error, so prevent the browser
-        // from displaying an 'unhandledrejection' error in the console
-        ev.stopPropagation();
-        ev.stopImmediatePropagation();
-        ev.preventDefault();
-    }
-});
-
 /**
  * Element which is designed to be unique and that will be the top-most element
  * in the widget hierarchy. So, all other widgets will be indirectly linked to