diff --git a/typo3/sysext/recordlist/Classes/Browser/AbstractElementBrowser.php b/typo3/sysext/recordlist/Classes/Browser/AbstractElementBrowser.php
index 62946d9272b6c3b9231ad32da8b4167508d853b4..14474909ace9e18f55fbe25c13698afab51aa028 100644
--- a/typo3/sysext/recordlist/Classes/Browser/AbstractElementBrowser.php
+++ b/typo3/sysext/recordlist/Classes/Browser/AbstractElementBrowser.php
@@ -63,7 +63,7 @@ abstract class AbstractElementBrowser
      *
      * @var string
      */
-    protected $bparams;
+    protected $bparams = '';
 
     protected ?ServerRequestInterface $request = null;