diff --git a/src/Bundle/ChillPersonBundle/Validator/Constraints/Person/BirthdateValidator.php b/src/Bundle/ChillPersonBundle/Validator/Constraints/Person/BirthdateValidator.php
index 35e67dc62..c0d9105ad 100644
--- a/src/Bundle/ChillPersonBundle/Validator/Constraints/Person/BirthdateValidator.php
+++ b/src/Bundle/ChillPersonBundle/Validator/Constraints/Person/BirthdateValidator.php
@@ -31,8 +31,8 @@ class BirthdateValidator extends ConstraintValidator
     private string $below_interval = 'P150Y';
 
     public function __construct(
-        private ParameterBagInterface $parameterBag,
-        private ClockInterface $clock
+        private readonly ParameterBagInterface $parameterBag,
+        private readonly ClockInterface $clock
     ) {
         $this->interval_spec = $this->parameterBag->get('chill_person')['validation']['birthdate_not_after'];
     }
@@ -71,13 +71,9 @@ class BirthdateValidator extends ConstraintValidator
 
     private function getLimitDate(): DateTime
     {
-        if (null !== $this->interval_spec) {
-            $interval = new DateInterval($this->interval_spec);
+        $interval = new DateInterval($this->interval_spec);
 
-            return DateTime::createFromImmutable($this->clock->now()->sub($interval));
-        }
-
-        return DateTime::createFromImmutable($this->clock->now());
+        return DateTime::createFromImmutable($this->clock->now()->sub($interval));
     }
 
     private function getBelowLimitDate(): DateTime