diff --git a/mail/inc/class.mail_ui.inc.php b/mail/inc/class.mail_ui.inc.php
index 44add9eb43..4fcf43bc3c 100644
--- a/mail/inc/class.mail_ui.inc.php
+++ b/mail/inc/class.mail_ui.inc.php
@@ -3585,7 +3585,7 @@ $filter['before']= date("d-M-Y", $cutoffdate2);
 				{
 					if (!isset($cache[$imageURL]))
 					{
-						if ($_type !="background")
+						if ($_type !="background" && !$imageURL)
 						{
 							$bo = Mail::getInstance(false, mail_ui::$icServerID);
 							$attachment = $bo->getAttachmentByCID($_uid, $CID, $_partID);