diff --git a/sites/default/default.settings.php b/sites/default/default.settings.php
index 562f998..214e939 100644
--- a/sites/default/default.settings.php
+++ b/sites/default/default.settings.php
@@ -494,6 +494,7 @@ ini_set('session.cookie_lifetime', 2000000);
* specific pattern:
* - 404_fast_paths_exclude: A regular expression to match paths to exclude,
* such as images generated by image styles, or dynamically-resized images.
+ * The default pattern provided below also excludes the private file system.
* If you need to add more paths, you can add '|path' to the expression.
* - 404_fast_paths: A regular expression to match paths that should return a
* simple 404 page, rather than the fully themed 404 page. If you don't have
@@ -502,7 +503,7 @@ ini_set('session.cookie_lifetime', 2000000);
*
* Add leading hash signs if you would like to disable this functionality.
*/
-$conf['404_fast_paths_exclude'] = '/\/(?:styles)\//';
+$conf['404_fast_paths_exclude'] = '/\/(?:styles)|(?:system\/files)\//';
$conf['404_fast_paths'] = '/\.(?:txt|png|gif|jpe?g|css|js|ico|swf|flv|cgi|bat|pl|dll|exe|asp)$/i';
$conf['404_fast_html'] = '404 Not FoundNot Found
The requested URL "@path" was not found on this server.
';