diff --git a/inc/inc.Utils.php b/inc/inc.Utils.php
index 4e3e3744c..1c346a3dd 100644
--- a/inc/inc.Utils.php
+++ b/inc/inc.Utils.php
@@ -743,6 +743,7 @@ function get_extension($mimetype) { /* {{{ */
 		case 'video/webm': return '.webm';
 		case 'application/zip': return '.zip';
 		case 'application/x-gzip': return '.gz';
+		case 'application/x-xz': return '.xz';
 		case 'application/x-rar': return '.rar';
 		case 'application/x-7z-compressed': return '.7z';
 		case 'application/x-compressed-tar': return '.tgz';