diff --git a/src/Symfony/Component/Serializer/Encoder/JsonDecode.php b/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
index 2ab7fbb547..81c8ee0f3d 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
@@ -50,23 +50,6 @@ class JsonDecode implements DecoderInterface
         $this->recursionDepth = (int) $depth;
     }
 
-    /**
-     * Returns the last decoding error (if any).
-     *
-     * @return int
-     *
-     * @deprecated since version 2.5, to be removed in 3.0.
-     *             The {@self decode()} method throws an exception if error found.
-     *
-     * @see http://php.net/manual/en/function.json-last-error.php json_last_error
-     */
-    public function getLastError()
-    {
-        trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0. Catch the exception raised by the decode() method instead to get the last JSON decoding error.', E_USER_DEPRECATED);
-
-        return $this->lastError;
-    }
-
     /**
      * Decodes data.
      *
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonEncode.php b/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
index 76345bed69..622c80e681 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
@@ -28,23 +28,6 @@ class JsonEncode implements EncoderInterface
         $this->options = $bitmask;
     }
 
-    /**
-     * Returns the last encoding error (if any).
-     *
-     * @return int
-     *
-     * @deprecated since version 2.5, to be removed in 3.0.
-     *             The {@self encode()} throws an exception if error found.
-     *
-     * @see http://php.net/manual/en/function.json-last-error.php json_last_error
-     */
-    public function getLastError()
-    {
-        trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0. Catch the exception raised by the encode() method instead to get the last JSON encoding error.', E_USER_DEPRECATED);
-
-        return $this->lastError;
-    }
-
     /**
      * Encodes PHP data to a JSON string.
      *
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php b/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
index d44cd23d7a..beab0209e8 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
@@ -36,34 +36,6 @@ class JsonEncoder implements EncoderInterface, DecoderInterface
         $this->decodingImpl = $decodingImpl ?: new JsonDecode(true);
     }
 
-    /**
-     * Returns the last encoding error (if any).
-     *
-     * @return int
-     *
-     * @deprecated since version 2.5, to be removed in 3.0. JsonEncode throws exception if an error is found.
-     */
-    public function getLastEncodingError()
-    {
-        trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0. Catch the exception raised by the Symfony\Component\Serializer\Encoder\JsonEncode::encode() method instead to get the last JSON encoding error.', E_USER_DEPRECATED);
-
-        return $this->encodingImpl->getLastError();
-    }
-
-    /**
-     * Returns the last decoding error (if any).
-     *
-     * @return int
-     *
-     * @deprecated since version 2.5, to be removed in 3.0. JsonDecode throws exception if an error is found.
-     */
-    public function getLastDecodingError()
-    {
-        trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0. Catch the exception raised by the Symfony\Component\Serializer\Encoder\JsonDecode::decode() method instead to get the last JSON decoding error.', E_USER_DEPRECATED);
-
-        return $this->decodingImpl->getLastError();
-    }
-
     /**
      * {@inheritdoc}
      */