diff --git a/src/PhpImap/Mailbox.php b/src/PhpImap/Mailbox.php
index 2d9a7b80..57a4053c 100644
--- a/src/PhpImap/Mailbox.php
+++ b/src/PhpImap/Mailbox.php
@@ -513,6 +513,7 @@ protected function initMailPart(IncomingMail $mail, $partStructure, $partNum, $m
 			$attachment = new IncomingMailAttachment();
 			$attachment->id = $attachmentId;
 			$attachment->name = $fileName;
+			$attachment->disposition = $partStructure->disposition;
 			if($this->attachmentsDir) {
 				$replace = array(
 					'/\s/' => '_',