diff --git a/api/src/Mail/Imap.php b/api/src/Mail/Imap.php
index 754c87b4ba..73b8f5643f 100644
--- a/api/src/Mail/Imap.php
+++ b/api/src/Mail/Imap.php
@@ -1455,7 +1455,8 @@ class Imap extends Horde_Imap_Client_Socket implements Imap\PushIface
 			return false;
 		}
 		try {
-			$metadata = explode(self::METADATA_SEPARATOR, $this->getMetadata(self::METADATA_MAILBOX, [self::METADATA_NAME])) ?: [];
+			$metadata = explode(self::METADATA_SEPARATOR,
+				$this->getMetadata(self::METADATA_MAILBOX, [self::METADATA_NAME])[self::METADATA_MAILBOX][self::METADATA_NAME]) ?: [];
 			$my_token = $this->pushToken($account_id);
 			$my_token_preg = '/^'.$this->pushToken($account_id, '[^@]+').'$/';
 			foreach($metadata as $key => $token)