diff --git a/addons/event/event_view.xml b/addons/event/event_view.xml
index e2ff2e67e87..16b2254492c 100644
--- a/addons/event/event_view.xml
+++ b/addons/event/event_view.xml
@@ -101,7 +101,7 @@
             <field name="arch" type="xml">
                 <form string="Events" version="7.0">
                     <header>
-                        <span groups="base.user_group">
+                        <span groups="base.group_user">
                             <button string="Confirm Event" name="button_confirm" states="draft" type="object" class="oe_highlight"/>
                             <button string="Event Ended" name="button_done" states="confirm" type="object" class="oe_highlight"/>
                             <button string="Set To Draft" name="button_draft" states="cancel,done" type="object" />