diff --git a/core/lib/Drupal/Core/Serialization/YamlEncoder.php b/core/lib/Drupal/Core/Serialization/YamlEncoder.php
index a4f533f..558cca7 100644
--- a/core/lib/Drupal/Core/Serialization/YamlEncoder.php
+++ b/core/lib/Drupal/Core/Serialization/YamlEncoder.php
@@ -17,7 +17,7 @@
  * Adds YAML support for serializer.
  *
  */
-class YamlEncoder extends SerializerAwareEncoder implements EncoderInterface, DecoderInterface {
+class YamlEncoder implements EncoderInterface, DecoderInterface {
 
   /**
    * The formats that this Encoder supports.