diff --git a/src/wp-includes/js/mediaelement/wp-mediaelement.js b/src/wp-includes/js/mediaelement/wp-mediaelement.js
index 159794091b..17f80519a2 100644
--- a/src/wp-includes/js/mediaelement/wp-mediaelement.js
+++ b/src/wp-includes/js/mediaelement/wp-mediaelement.js
@@ -20,7 +20,7 @@
 		 */
 		function initialize() {
 			if ( typeof _wpmejsSettings !== 'undefined' ) {
-				settings = _wpmejsSettings;
+				settings = $.extend( true, {}, _wpmejsSettings );
 			}
 
 			settings.success = settings.success || function (mejs) {
diff --git a/src/wp-includes/js/mediaelement/wp-playlist.js b/src/wp-includes/js/mediaelement/wp-playlist.js
index 90839a5da6..4dfccef991 100644
--- a/src/wp-includes/js/mediaelement/wp-playlist.js
+++ b/src/wp-includes/js/mediaelement/wp-playlist.js
@@ -31,7 +31,7 @@
 			_.bindAll( this, 'bindPlayer', 'bindResetPlayer', 'setPlayer', 'ended', 'clickTrack' );
 
 			if ( ! _.isUndefined( window._wpmejsSettings ) ) {
-				this.settings = _wpmejsSettings;
+				this.settings = _.clone( _wpmejsSettings );
 			}
 			this.settings.success = this.bindPlayer;
 			this.setPlayer();
@@ -172,4 +172,4 @@
 
 	window.WPPlaylistView = WPPlaylistView;
 
-}(jQuery, _, Backbone));
\ No newline at end of file
+}(jQuery, _, Backbone));