Index: wp-includes/css/media-views.css
===================================================================
--- wp-includes/css/media-views.css	(revision 22995)
+++ wp-includes/css/media-views.css	(working copy)
@@ -1266,6 +1266,7 @@
 	padding: 2px 4px;
 	margin: -2px -4px;
 	text-decoration: none;
+	white-space: nowrap;
 }
 
 .attachment-info .delete-attachment a:hover {