diff --git a/src/wp-includes/js/mediaelement/wp-mediaelement.css b/src/wp-includes/js/mediaelement/wp-mediaelement.css
index 66761014f1..707b48683c 100644
--- a/src/wp-includes/js/mediaelement/wp-mediaelement.css
+++ b/src/wp-includes/js/mediaelement/wp-mediaelement.css
@@ -146,7 +146,7 @@ video.wp-video-shortcode,
 
 .wp-playlist .mejs-container {
 	margin: 0;
-	width: 100%;
+	max-width: 100%;
 }
 
 .wp-playlist .mejs-controls .mejs-button button {