diff --git a/addons/calendar/data/mail_data.xml b/addons/calendar/data/mail_data.xml
index d48bb4613e2..64b89533668 100644
--- a/addons/calendar/data/mail_data.xml
+++ b/addons/calendar/data/mail_data.xml
@@ -204,7 +204,7 @@
         This is a reminder for the below event :
     </p>
     <div style="text-align: center; margin: 16px 0px 16px 0px;">
-        <a href="/calendar/meeting/accept?token=${object.access_token}&amp;event_id=${object.event_id.id}" 
+        <a href="/calendar/meeting/accept?token=${object.access_token}&amp;id=${object.event_id.id}" 
             style="padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px">
             Accept</a>
         <a href="/calendar/meeting/decline?token=${object.access_token}&amp;id=${object.event_id.id}"
diff --git a/addons/calendar/i18n/calendar.pot b/addons/calendar/i18n/calendar.pot
index 8ef3a9f76df..37e00a57164 100644
--- a/addons/calendar/i18n/calendar.pot
+++ b/addons/calendar/i18n/calendar.pot
@@ -226,7 +226,7 @@ msgid ""
 "        This is a reminder for the below event :\n"
 "    </p>\n"
 "    <div style=\"text-align: center; margin: 16px 0px 16px 0px;\">\n"
-"        <a href=\"/calendar/meeting/accept?token=${object.access_token}&amp;event_id=${object.event_id.id}\" style=\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\">\n"
+"        <a href=\"/calendar/meeting/accept?token=${object.access_token}&amp;id=${object.event_id.id}\" style=\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\">\n"
 "            Accept</a>\n"
 "        <a href=\"/calendar/meeting/decline?token=${object.access_token}&amp;id=${object.event_id.id}\" style=\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\">\n"
 "            Decline</a>\n"