diff --git a/src/Bundle/ChillMainBundle/Export/ExportDataNormalizerTrait.php b/src/Bundle/ChillMainBundle/Export/ExportDataNormalizerTrait.php
index ee9ad2aa9..483e12cf8 100644
--- a/src/Bundle/ChillMainBundle/Export/ExportDataNormalizerTrait.php
+++ b/src/Bundle/ChillMainBundle/Export/ExportDataNormalizerTrait.php
@@ -30,7 +30,7 @@ trait ExportDataNormalizerTrait
      *                          an array of their identifiers is returned. If a single entity is provided, its identifier
      *                          is returned. If null, returns an empty value.
      */
-    public function normalizeDoctrineEntity(object|array|null $entity): array|int|string
+    private function normalizeDoctrineEntity(object|array|null $entity): array|int|string
     {
         if (is_array($entity)) {
             return array_values(array_filter(array_map(static fn (object $entity) => $entity->getId(), $entity), fn ($value) => null !== $value));
@@ -52,7 +52,7 @@ trait ExportDataNormalizerTrait
      *
      * @throws \UnexpectedValueException when the entity with the given ID does not exist
      */
-    public function denormalizeDoctrineEntity(array|int|string $id, ObjectRepository $repository): object|array
+    private function denormalizeDoctrineEntity(array|int|string $id, ObjectRepository $repository): object|array
     {
         if (is_array($id)) {
             return $repository->findBy(['id' => $id]);
@@ -145,7 +145,7 @@ trait ExportDataNormalizerTrait
      *
      * @return string a formatted string containing the type and formatted date
      */
-    public function normalizeDate(\DateTimeImmutable|\DateTime $date): string
+    private function normalizeDate(\DateTimeImmutable|\DateTime $date): string
     {
         return sprintf(
             '%s,%s',
@@ -166,7 +166,7 @@ trait ExportDataNormalizerTrait
      *
      * @throws \UnexpectedValueException if the kind selector or date format is invalid
      */
-    public function denormalizeDate(string $date): \DateTimeImmutable|\DateTime
+    private function denormalizeDate(string $date): \DateTimeImmutable|\DateTime
     {
         $format = 'd-m-Y-H:i:s.u e';