diff --git a/src/UnicaenMail/Service/Mail/MailService.php b/src/UnicaenMail/Service/Mail/MailService.php
index feceb1f76067155ef75d8539d2a32b752b77251f..20538f1b6cfa1853003fbaad4252f77402db3ee3 100644
--- a/src/UnicaenMail/Service/Mail/MailService.php
+++ b/src/UnicaenMail/Service/Mail/MailService.php
@@ -228,7 +228,7 @@ EOS;
                 $extension = pathinfo($attachement, PATHINFO_EXTENSION);
                 $basename = pathinfo($attachement, PATHINFO_BASENAME);
                 if ($extension === 'ics') {
-                    $mailSymfony->attachFromPath($attachement, $basename, 'text/calendar');
+                    $mailSymfony->attachFromPath($attachement, $basename, 'text/calendar; METHOD=REQUEST');
                 } else {
                     $mailSymfony->attachFromPath($attachement, $basename,);
                 }