diff --git a/src/Bundle/ChillMainBundle/Form/Type/DataTransformer/EntityToJsonTransformer.php b/src/Bundle/ChillMainBundle/Form/Type/DataTransformer/EntityToJsonTransformer.php
index 8f0126049..b51601caf 100644
--- a/src/Bundle/ChillMainBundle/Form/Type/DataTransformer/EntityToJsonTransformer.php
+++ b/src/Bundle/ChillMainBundle/Form/Type/DataTransformer/EntityToJsonTransformer.php
@@ -66,7 +66,7 @@ class EntityToJsonTransformer implements DataTransformerInterface
         ]);
     }
 
-    private function denormalizeOne(array $item)
+    private function denormalizeOne(array|string $item)
     {
         if (!\array_key_exists('type', $item)) {
             throw new TransformationFailedException('the key "type" is missing on element');
@@ -76,6 +76,17 @@ class EntityToJsonTransformer implements DataTransformerInterface
             throw new TransformationFailedException('the key "id" is missing on element');
         }
 
+        if ('me' === $item) {
+            // return the denormalized current user
+            /*            return
+                            $this->denormalizer->denormalize(
+                                ['type' => $item['type'], 'id' => $item['id']],
+                                User::class,
+                                'json',
+                                $context,
+                            );*/
+        }
+
         $class = match ($this->type) {
             'user' => User::class,
             'person' => Person::class,
diff --git a/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/ReferrerFilter.php b/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/ReferrerFilter.php
index 66896f1b8..3573a9363 100644
--- a/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/ReferrerFilter.php
+++ b/src/Bundle/ChillPersonBundle/Export/Filter/AccompanyingCourseFilters/ReferrerFilter.php
@@ -68,7 +68,7 @@ class ReferrerFilter implements FilterInterface
     {
         $builder
             ->add('accepted_referrers', PickUserOrMeDynamicType::class, [
-                'multiple' => true,
+                'multiple' => false,
             ])
 /*            ->add('accepted_referrers', PickUserDynamicType::class, [
                 'multiple' => true,