diff --git a/src/Transport/Office365MailTransport.php b/src/Transport/Office365MailTransport.php
index 33fab3b..0df455d 100644
--- a/src/Transport/Office365MailTransport.php
+++ b/src/Transport/Office365MailTransport.php
@@ -269,7 +269,7 @@ protected function allContacts(Swift_Mime_SimpleMessage $message)
             (array) $message->getTo(),
             (array) $message->getCc(),
             (array) $message->getBcc(),
-            (array) $message->getReplyTo(),
+            (array) $message->getReplyTo()
         );
     }