diff --git a/serializer.rst b/serializer.rst
index 54a7e28b4cd..35894018cb5 100644
--- a/serializer.rst
+++ b/serializer.rst
@@ -243,7 +243,7 @@ Use the options to specify context specific to normalization or denormalization:
     {
         #[Context(
             normalizationContext: [DateTimeNormalizer::FORMAT_KEY => 'Y-m-d'],
-            denormalizationContext: [DateTimeNormalizer::FORMAT_KEY => \DateTime::RFC3339],
+            denormalizationContext: [DateTimeNormalizer::FORMAT_KEY => '!Y-m-d'], // To prevent to have the time from the moment of denormalization
         )]
         public $createdAt;