diff --git a/fMailbox.php b/fMailbox.php
index e4a6466f..c1ee5e96 100644
--- a/fMailbox.php
+++ b/fMailbox.php
@@ -219,7 +219,7 @@ static private function handlePart($info, $structure)
 		}
 
 		// This indicates a content-id which is used for multipart/related
-		if ($structure['content_id']) {
+		if ($structure['content_id'] && $structure['disposition'] == 'inline') {
 			if (!isset($info['related'])) {
 				$info['related'] = array();
 			}