diff --git a/include/class.mailer.php b/include/class.mailer.php
index 5d7a135a354330624c1122f342a57c1ab3ab5c3f..ff10eec68e33bc33f24ed65250a22f9745e0889e 100644
--- a/include/class.mailer.php
+++ b/include/class.mailer.php
@@ -434,6 +434,9 @@ class Mailer {
                                 $recipient->getName(),
                                 $recipient->getEmail()));
                     break;
+                case $recipient instanceof EmailAddress:
+                    $mime->addTo($recipient->getAddress());
+                    break;
                 default:
                     // Assuming email address.
                     $mime->addTo($recipient);