diff --git a/module/VuFind/src/VuFind/View/Helper/Root/Url.php b/module/VuFind/src/VuFind/View/Helper/Root/Url.php
index 12f8b45efaa6c590661d0edc09e2073bd04b4d2e..97377be49eebc7e851fb06b5d7bb19b1b7c61e33 100644
--- a/module/VuFind/src/VuFind/View/Helper/Root/Url.php
+++ b/module/VuFind/src/VuFind/View/Helper/Root/Url.php
@@ -52,7 +52,7 @@ class Url extends \Laminas\View\Helper\Url
      *
      * @param Request $request Request object for GET parameters
      */
-    public function __construct(Request $request)
+    public function __construct(Request $request = null)
     {
         $this->request = $request;
     }