diff --git src/wp-admin/css/list-tables.css src/wp-admin/css/list-tables.css
index ca71d36f49..0f3348994a 100644
--- src/wp-admin/css/list-tables.css
+++ src/wp-admin/css/list-tables.css
@@ -400,6 +400,7 @@ table.media .column-title .filename {
 	border-radius: 5px;
 	margin: 0;
 	padding: 2px 5px;
+	white-space: nowrap;
 }
 
 /* @todo: pick a consistent list table selector */