diff --git a/addons/base_calendar/crm_meeting_view.xml b/addons/base_calendar/crm_meeting_view.xml
index c58c27a9959..77244addd9f 100644
--- a/addons/base_calendar/crm_meeting_view.xml
+++ b/addons/base_calendar/crm_meeting_view.xml
@@ -73,7 +73,7 @@
         <field name="arch" type="xml">
             <form string="Meetings" version="7.0">
                 <header>
-                    <button name="case_open" string="Confirm" type="object" class="oe_highlight"
+                    <button name="case_open" string="Confirm" type="object"
                             states="draft"/>
                     <button name="case_close" string="Done" type="object"
                             states="open"/>