diff --git a/public/typo3conf/ext/ep_products/Classes/Controller/AjaxWatchlistController.php b/public/typo3conf/ext/ep_products/Classes/Controller/AjaxWatchlistController.php
index f81e3af7..396939a2 100644
--- a/public/typo3conf/ext/ep_products/Classes/Controller/AjaxWatchlistController.php
+++ b/public/typo3conf/ext/ep_products/Classes/Controller/AjaxWatchlistController.php
@@ -81,7 +81,7 @@ class AjaxWatchlistController extends ActionController
      * @return string
      * @throws \Doctrine\DBAL\DBALException
      */
-    public function listAction(array $watchlistUids)
+    public function listAction(array $watchlistUids = [])
     {
         $productUids = array_map(function ($uid) {
             [ , $productUid ] = GeneralUtility::trimExplode(':', $uid);