diff --git a/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php
index 859a09362d3f0..4f6d678d6dd14 100644
--- a/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php
@@ -20,7 +20,7 @@
  *
  * @author Alexandre Daubois <alex.daubois@gmail.com>
  */
-final class BackedEnumNormalizer implements NormalizerInterface, DenormalizerInterface, CacheableSupportsMethodInterface
+class BackedEnumNormalizer implements NormalizerInterface, DenormalizerInterface, CacheableSupportsMethodInterface
 {
     /**
      * {@inheritdoc}