diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index 91e4b80840..57e5b4b4f5 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -248,7 +248,7 @@ class XmlEncoder extends SerializerAwareEncoder implements EncoderInterface, Dec
                 } else {
                     $data['item'][] = $value;
                 }
-            } elseif (array_key_exists($key, $data)) {
+            } elseif (array_key_exists($key, $data) || $key == "entry") {
                 if ((false === is_array($data[$key]))  || (false === isset($data[$key][0]))) {
                     $data[$key] = array($data[$key]);
                 }