diff --git a/src/GraphQl/Serializer/ItemNormalizer.php b/src/GraphQl/Serializer/ItemNormalizer.php
index e4bcfc3cb30..0f10120491b 100644
--- a/src/GraphQl/Serializer/ItemNormalizer.php
+++ b/src/GraphQl/Serializer/ItemNormalizer.php
@@ -65,6 +65,8 @@ public function supportsNormalization($data, $format = null, array $context = []
     /**
      * {@inheritdoc}
      *
+     * @param array<string, mixed> $context
+     *
      * @throws UnexpectedValueException
      *
      * @return array|string|int|float|bool|\ArrayObject|null