diff --git a/mail/templates/default/preview.css b/mail/templates/default/preview.css
index a091883b36..33367db159 100644
--- a/mail/templates/default/preview.css
+++ b/mail/templates/default/preview.css
@@ -106,7 +106,7 @@ blockquote blockquote blockquote blockquote blockquote blockquote{
 
 .mail_externalImagesMsg button.closeBtn {
 	float: right;
-    background-image: url(../../../pixelegg/images/close.png);
+    background-image: url(../api/templates/default/images/close.svg);
     height: 30px;
     width: 50px;
     background-repeat: no-repeat;
@@ -124,7 +124,7 @@ blockquote blockquote blockquote blockquote blockquote blockquote{
 }
 
 #smimePasswordRequest {
-	background-image:url('../../../pixelegg/images/lock.png');
+	background-image:url('../api/templates/default/images/lock.svg');
 	width:100%;
 	height:90%;
 	background-repeat: space;