diff --git a/addons/website_event/static/src/js/website_event.js b/addons/website_event/static/src/js/website_event.js
index 98a49a88951..6916b3e7b88 100644
--- a/addons/website_event/static/src/js/website_event.js
+++ b/addons/website_event/static/src/js/website_event.js
@@ -20,7 +20,8 @@ var EventRegistrationForm = Widget.extend({
                 .off('click')
                 .click(function (ev) {
                     self.on_click(ev);
-                });
+                })
+                .prop('disabled', false);
         });
         return res;
     },
diff --git a/addons/website_event/views/event_templates_page_registration.xml b/addons/website_event/views/event_templates_page_registration.xml
index 8025c6f50c1..66144b9f3b9 100644
--- a/addons/website_event/views/event_templates_page_registration.xml
+++ b/addons/website_event/views/event_templates_page_registration.xml
@@ -259,7 +259,7 @@
                         </div>
                     </div>
                     <div class="d-grid col-lg-4 pt-3 pt-lg-0 ps-2 ps-lg-0">
-                        <button type="submit" class="btn btn-primary o_wait_lazy_js a-submit" t-attf-id="#{event.id}">
+                        <button type="submit" class="btn btn-primary o_wait_lazy_js a-submit" t-attf-id="#{event.id}" disabled="disabled">
                             Register
                             <t t-if="event.seats_limited and event.seats_max and event.seats_available &lt;= (event.seats_max * 0.2)">
                                 (only <t t-out="event.seats_available"/> available)