Index: wp-includes/js/media-views.js
===================================================================
--- wp-includes/js/media-views.js	(revision 23123)
+++ wp-includes/js/media-views.js	(working copy)
@@ -2896,7 +2896,7 @@
 					height:        '',
 					compat:        false,
 					alt:           '',
-					description:   '',
+					description:   ''
 				});
 
 			options.buttons  = this.buttons;