diff --git a/lib/Horde/Imap/Client/Data/Format/Mailbox.php b/lib/Horde/Imap/Client/Data/Format/Mailbox.php
index c7476af9..881cd81e 100644
--- a/lib/Horde/Imap/Client/Data/Format/Mailbox.php
+++ b/lib/Horde/Imap/Client/Data/Format/Mailbox.php
@@ -44,7 +44,7 @@ public function __construct($data)
     {
         $this->_mailbox = Horde_Imap_Client_Mailbox::get($data);
 
-        parent::__construct($this->_mailbox->{$this->_encoding});
+        parent::__construct($this->_mailbox->utf8);
     }
 
     /**