diff --git a/src/Resources/contao/dca/tl_cookie.php b/src/Resources/contao/dca/tl_cookie.php
index 9bc50db..a24defe 100644
--- a/src/Resources/contao/dca/tl_cookie.php
+++ b/src/Resources/contao/dca/tl_cookie.php
@@ -691,7 +691,7 @@ public function overwriteTranslation($varValue, $dc)
     {
         $field = $dc->activeRecord->type . '_' . $dc->field;
 
-        if($tl = $GLOBALS['TL_LANG']['tl_cookie'][$field])
+        if($tl = ($GLOBALS['TL_LANG']['tl_cookie'][$field] ?? null))
         {
             $GLOBALS['TL_DCA']['tl_cookie']['fields'][$dc->field]['label'] = $tl;
         }