diff --git a/addons/website_event/static/src/js/website_event.js b/addons/website_event/static/src/js/website_event.js
index 527d954c524..11990e970ce 100644
--- a/addons/website_event/static/src/js/website_event.js
+++ b/addons/website_event/static/src/js/website_event.js
@@ -18,7 +18,6 @@ var EventRegistrationForm = Widget.extend({
         var res = this._super.apply(this.arguments).then(function () {
             $('#registration_form .a-submit')
                 .off('click')
-                .removeClass('a-submit')
                 .click(function (ev) {
                     self.on_click(ev);
                 });