diff --git a/README.md b/README.md
index 14fc907..2fd4286 100644
--- a/README.md
+++ b/README.md
@@ -227,7 +227,7 @@ Example:
                     'adminsortable/js/admin.sortable.tabular.inlines.js',
                 )
             css = {
-                'screen': ('adminsortable/css/admin.sortable.inline.css'),
+                'screen': ('adminsortable/css/admin.sortable.inline.css', ),
             }