diff --git a/src/Attributes/Author.php b/src/Attributes/Author.php
index a671c455..096773fa 100644
--- a/src/Attributes/Author.php
+++ b/src/Attributes/Author.php
@@ -24,8 +24,8 @@ class Author extends CastForSave
 {
     protected function getDefaultCaster(): callable
     {
-        return function (mixed $value, ORM $orm, object $entity, UserService $userService) {
-            if (!$value) {
+        return function (mixed $value, ORM $orm, object $entity, UserService $userService = null) {
+            if (!$value && $userService) {
                 $mapper = $orm->mapper($entity::class);
 
                 if ($mapper->canCheckIsNew()) {
diff --git a/src/Attributes/Modifier.php b/src/Attributes/Modifier.php
index dcd0a273..49dc7c11 100644
--- a/src/Attributes/Modifier.php
+++ b/src/Attributes/Modifier.php
@@ -24,7 +24,11 @@ class Modifier extends CastForSave
 {
     protected function getDefaultCaster(): callable
     {
-        return function (mixed $value, ORM $orm, object $entity, UserService $userService) {
+        return function (mixed $value, ORM $orm, object $entity, UserService $userService = null) {
+            if (!$userService) {
+                return $value;
+            }
+
             $mapper = $orm->mapper($entity::class);
 
             if ($mapper->canCheckIsNew()) {