diff --git a/src/wp-includes/js/mediaelement/wp-mediaelement.js b/src/wp-includes/js/mediaelement/wp-mediaelement.js
index 6e20b90058..8c4364aa32 100644
--- a/src/wp-includes/js/mediaelement/wp-mediaelement.js
+++ b/src/wp-includes/js/mediaelement/wp-mediaelement.js
@@ -11,7 +11,7 @@
 			settings = _wpmejsSettings;
 		}
 
-		settings.success = function (mejs) {
+		settings.success = settings.success || function (mejs) {
 			var autoplay, loop;
 
 			if ( 'flash' === mejs.pluginType ) {