diff --git a/src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ConfidentialCourseMustHaveReferrer.php b/src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ConfidentialCourseMustHaveReferrer.php
index d450717fd..31525b939 100644
--- a/src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ConfidentialCourseMustHaveReferrer.php
+++ b/src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ConfidentialCourseMustHaveReferrer.php
@@ -18,6 +18,9 @@ class ConfidentialCourseMustHaveReferrer extends Constraint
 {
     public string $message = 'A confidential parcours must have a referrer';
 
+    /**
+     * @return array<string>
+     */
     public function getTargets(): array
     {
         return [self::CLASS_CONSTRAINT];