diff --git a/code_samples/back_office/limitation/src/Security/Form/FormSubmissionServiceDecorator.php b/code_samples/back_office/limitation/src/Security/Form/FormSubmissionServiceDecorator.php
index 2f0328b8765..cbdc39f4eb5 100644
--- a/code_samples/back_office/limitation/src/Security/Form/FormSubmissionServiceDecorator.php
+++ b/code_samples/back_office/limitation/src/Security/Form/FormSubmissionServiceDecorator.php
@@ -16,10 +16,10 @@
 class FormSubmissionServiceDecorator implements FormSubmissionServiceInterface
 {
     public function __construct(
-        readonly FormSubmissionServiceInterface $innerService,
-        readonly PermissionResolver $permissionResolver,
-        readonly ContentService $contentService,
-        readonly FormSubmissionGateway $gateway,
+        private readonly FormSubmissionServiceInterface $innerService,
+        private readonly PermissionResolver $permissionResolver,
+        private readonly ContentService $contentService,
+        private readonly FormSubmissionGateway $gateway,
     ) {
     }