diff --git a/typo3/sysext/frontend/Classes/ContentObject/ContentObjectRenderer.php b/typo3/sysext/frontend/Classes/ContentObject/ContentObjectRenderer.php
index 86f8639625ebdec160a25ab936822a6fb22a1f3b..9b34f151cd1f50b827ed0bc314bd1639395aa8db 100644
--- a/typo3/sysext/frontend/Classes/ContentObject/ContentObjectRenderer.php
+++ b/typo3/sysext/frontend/Classes/ContentObject/ContentObjectRenderer.php
@@ -2739,7 +2739,7 @@ class ContentObjectRenderer implements LoggerAwareInterface
             $listNum = (string)random_int(0, count($temp) - 1);
         }
         $index = $this->calc(str_ireplace('last', $last, $listNum));
-        return $temp[$index];
+        return $temp[$index] ?? '';
     }
 
     /**