diff --git src/wp-admin/css/edit.css src/wp-admin/css/edit.css
index 64b98ae99f..6d54d20157 100644
--- src/wp-admin/css/edit.css
+++ src/wp-admin/css/edit.css
@@ -1085,10 +1085,6 @@ p.popular-tags a {
 	text-decoration: underline;
 }
 
-#edittag {
-	max-width: 800px;
-}
-
 .edit-tag-actions {
 	margin-top: 20px;
 	overflow: hidden;