diff --git a/wp-includes/js/mediaelement/wp-mediaelement.css b/wp-includes/js/mediaelement/wp-mediaelement.css
index 420785aae7..82548b2de1 100644
--- a/wp-includes/js/mediaelement/wp-mediaelement.css
+++ b/wp-includes/js/mediaelement/wp-mediaelement.css
@@ -110,6 +110,8 @@
 .wp-playlist-item .wp-playlist-caption {
 	text-decoration: none;
 	color: #000;
+	max-width: -webkit-calc(100% - 40px);
+	max-width: calc(100% - 40px);
 }
 
 .wp-playlist-item-meta {