diff --git a/conf/nginx.conf b/conf/nginx.conf
index 09cca21..d1c54ad 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -35,9 +35,9 @@ location ^~ __PATH__/ {
     }
 
     ## disable all access to the following directories
-    location ~ ^__PATH__/(config|tmp|core|lang) {
+    location ~ ^__PATH__/(config/|tmp/|core/|lang/) {
         deny all;
-        return 404;
+        return 403;
     }
 
     location ~ __PATH__/\.ht {