diff --git a/src/Bundle/ChillMainBundle/Templating/Entity/UserRender.php b/src/Bundle/ChillMainBundle/Templating/Entity/UserRender.php
index de9f4abbe..170116f04 100644
--- a/src/Bundle/ChillMainBundle/Templating/Entity/UserRender.php
+++ b/src/Bundle/ChillMainBundle/Templating/Entity/UserRender.php
@@ -65,7 +65,7 @@ class UserRender implements ChillEntityRenderInterface
     }
 
     /**
-     * @param array{main_scope?: bool, user_job?: bool, absence?: bool, at_date?: DateTimeImmutable|DateTimeMutable|null} $options
+     * @param array{main_scope?: bool, user_job?: bool, absence?: bool, at_date?: DateTimeImmutable|DateTime|null} $options
      */
     public function renderString($entity, array $options): string
     {
diff --git a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/AccompanyingPeriodWorkNormalizer.php b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/AccompanyingPeriodWorkNormalizer.php
index 94c440519..5d6000164 100644
--- a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/AccompanyingPeriodWorkNormalizer.php
+++ b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/AccompanyingPeriodWorkNormalizer.php
@@ -57,20 +57,19 @@ class AccompanyingPeriodWorkNormalizer implements ContextAwareNormalizerInterfac
         // add the referrers
         $initial['referrers'] = [];
 
-        if ($object instanceof AccompanyingPeriodWork) {
-            foreach ($object->getReferrersHistory() as $referrerHistory) {
-                if (null !== $referrerHistory->getEndDate()) {
-                    continue;
-                }
-
-                $initial['referrers'][] = $this->normalizer->normalize(
-                    $referrerHistory->getUser(),
-                    $format,
-                    [...$context, UserNormalizer::AT_DATE => $referrerHistory->getStartDate()]
-                );
+        foreach ($object->getReferrersHistory() as $referrerHistory) {
+            if (null !== $referrerHistory->getEndDate()) {
+                continue;
             }
+
+            $initial['referrers'][] = $this->normalizer->normalize(
+                $referrerHistory->getUser(),
+                $format,
+                [...$context, UserNormalizer::AT_DATE => $referrerHistory->getStartDate()]
+            );
         }
 
+
         if ('json' === $format) {
             // then, we add normalization for things which are not into the entity
             $initial['workflows_availables'] = $this->metadataExtractor->availableWorkflowFor(