diff --git a/app/Enumerations/BaseEnumeration.php b/app/Enumerations/BaseEnumeration.php
index 356ac390..e7781522 100644
--- a/app/Enumerations/BaseEnumeration.php
+++ b/app/Enumerations/BaseEnumeration.php
@@ -47,7 +47,7 @@ abstract class BaseEnumeration
     public static function push($key, $translation, $overwrite = false)
     {
         // item exists and we do not want to overwrite items
-        if (!$overwrite && isset(self::$items[get_called_class()][$key])) {
+        if (!$overwrite && !is_null($key) && isset(self::$items[get_called_class()][$key])) {
             throw new EnumerationExistsException(get_called_class() . ': ' . $key . ' already in ' . $translation);
         }