diff --git a/modules/image/image.module b/modules/image/image.module
index c6a23f2..50cf484 100644
--- a/modules/image/image.module
+++ b/modules/image/image.module
@@ -820,7 +820,7 @@ function image_style_deliver($style, $scheme) {
     $valid = $valid && isset($_GET[IMAGE_DERIVATIVE_TOKEN]) && $_GET[IMAGE_DERIVATIVE_TOKEN] === image_style_path_token($style['name'], $scheme . '://' . $target);
   }
   if (!$valid) {
-    return MENU_ACCESS_DENIED;
+    return MENU_NOT_FOUND;
   }
 
   $image_uri = $scheme . '://' . $target;