diff --git a/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php b/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php
index 6a6fc92970..655262f406 100644
--- a/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php
@@ -48,6 +48,15 @@ class AmqpCaster
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
+        $a += array(
+            $prefix.'is_connected' => $c->isConnected(),
+        );
+
+        // Recent version of the extension already expose private properties
+        if (isset($a["\x00AMQPConnection\x00login"])) {
+            return $a;
+        }
+
         // BC layer in the amqp lib
         if (method_exists($c, 'getReadTimeout')) {
             $timeout = $c->getReadTimeout();
@@ -56,13 +65,13 @@ class AmqpCaster
         }
 
         $a += array(
-            $prefix.'isConnected' => $c->isConnected(),
+            $prefix.'is_connected' => $c->isConnected(),
             $prefix.'login' => $c->getLogin(),
             $prefix.'password' => $c->getPassword(),
             $prefix.'host' => $c->getHost(),
-            $prefix.'port' => $c->getPort(),
             $prefix.'vhost' => $c->getVhost(),
-            $prefix.'readTimeout' => $timeout,
+            $prefix.'port' => $c->getPort(),
+            $prefix.'read_timeout' => $timeout,
         );
 
         return $a;
@@ -73,11 +82,19 @@ class AmqpCaster
         $prefix = Caster::PREFIX_VIRTUAL;
 
         $a += array(
-            $prefix.'isConnected' => $c->isConnected(),
-            $prefix.'channelId' => $c->getChannelId(),
-            $prefix.'prefetchSize' => $c->getPrefetchSize(),
-            $prefix.'prefetchCount' => $c->getPrefetchCount(),
+            $prefix.'is_connected' => $c->isConnected(),
+            $prefix.'channel_id' => $c->getChannelId(),
+        );
+
+        // Recent version of the extension already expose private properties
+        if (isset($a["\x00AMQPChannel\x00connection"])) {
+            return $a;
+        }
+
+        $a += array(
             $prefix.'connection' => $c->getConnection(),
+            $prefix.'prefetch_size' => $c->getPrefetchSize(),
+            $prefix.'prefetch_count' => $c->getPrefetchCount(),
         );
 
         return $a;
@@ -88,11 +105,19 @@ class AmqpCaster
         $prefix = Caster::PREFIX_VIRTUAL;
 
         $a += array(
-            $prefix.'name' => $c->getName(),
             $prefix.'flags' => self::extractFlags($c->getFlags()),
-            $prefix.'arguments' => $c->getArguments(),
+        );
+
+        // Recent version of the extension already expose private properties
+        if (isset($a["\x00AMQPQueue\x00name"])) {
+            return $a;
+        }
+
+        $a += array(
             $prefix.'connection' => $c->getConnection(),
             $prefix.'channel' => $c->getChannel(),
+            $prefix.'name' => $c->getName(),
+            $prefix.'arguments' => $c->getArguments(),
         );
 
         return $a;
@@ -103,12 +128,24 @@ class AmqpCaster
         $prefix = Caster::PREFIX_VIRTUAL;
 
         $a += array(
-            $prefix.'name' => $c->getName(),
             $prefix.'flags' => self::extractFlags($c->getFlags()),
-            $prefix.'type' => isset(self::$exchangeTypes[$c->getType()]) ? new ConstStub(self::$exchangeTypes[$c->getType()], $c->getType()) : $c->getType(),
-            $prefix.'arguments' => $c->getArguments(),
-            $prefix.'channel' => $c->getChannel(),
+        );
+
+        $type = isset(self::$exchangeTypes[$c->getType()]) ? new ConstStub(self::$exchangeTypes[$c->getType()], $c->getType()) : $c->getType();
+
+        // Recent version of the extension already expose private properties
+        if (isset($a["\x00AMQPExchange\x00name"])) {
+            $a["\x00AMQPExchange\x00type"] = $type;
+
+            return $a;
+        }
+
+        $a += array(
             $prefix.'connection' => $c->getConnection(),
+            $prefix.'channel' => $c->getChannel(),
+            $prefix.'name' => $c->getName(),
+            $prefix.'type' => $type,
+            $prefix.'arguments' => $c->getArguments(),
         );
 
         return $a;
@@ -118,28 +155,37 @@ class AmqpCaster
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
+        $deliveryMode = new ConstStub($c->getDeliveryMode().(2 === $c->getDeliveryMode() ? ' (persistent)' : ' (non-persistent)'), $c->getDeliveryMode());
+
+        // Recent version of the extension already expose private properties
+        if (isset($a["\x00AMQPEnvelope\x00body"])) {
+            $a["\0AMQPEnvelope\0delivery_mode"] = $deliveryMode;
+
+            return $a;
+        }
+
         if (!($filter & Caster::EXCLUDE_VERBOSE)) {
             $a += array($prefix.'body' => $c->getBody());
         }
 
         $a += array(
-            $prefix.'routingKey' => $c->getRoutingKey(),
-            $prefix.'deliveryTag' => $c->getDeliveryTag(),
-            $prefix.'deliveryMode' => new ConstStub($c->getDeliveryMode().(2 === $c->getDeliveryMode() ? ' (persistent)' : ' (non-persistent)'), $c->getDeliveryMode()),
-            $prefix.'exchangeName' => $c->getExchangeName(),
-            $prefix.'isRedelivery' => $c->isRedelivery(),
-            $prefix.'contentType' => $c->getContentType(),
-            $prefix.'contentEncoding' => $c->getContentEncoding(),
-            $prefix.'type' => $c->getType(),
-            $prefix.'timestamp' => $c->getTimeStamp(),
-            $prefix.'priority' => $c->getPriority(),
-            $prefix.'expiration' => $c->getExpiration(),
-            $prefix.'userId' => $c->getUserId(),
-            $prefix.'appId' => $c->getAppId(),
-            $prefix.'messageId' => $c->getMessageId(),
-            $prefix.'replyTo' => $c->getReplyTo(),
-            $prefix.'correlationId' => $c->getCorrelationId(),
+            $prefix.'delivery_tag' => $c->getDeliveryTag(),
+            $prefix.'is_redelivery' => $c->isRedelivery(),
+            $prefix.'exchange_name' => $c->getExchangeName(),
+            $prefix.'routing_key' => $c->getRoutingKey(),
+            $prefix.'content_type' => $c->getContentType(),
+            $prefix.'content_encoding' => $c->getContentEncoding(),
             $prefix.'headers' => $c->getHeaders(),
+            $prefix.'delivery_mode' => $deliveryMode,
+            $prefix.'priority' => $c->getPriority(),
+            $prefix.'correlation_id' => $c->getCorrelationId(),
+            $prefix.'reply_to' => $c->getReplyTo(),
+            $prefix.'expiration' => $c->getExpiration(),
+            $prefix.'message_id' => $c->getMessageId(),
+            $prefix.'timestamp' => $c->getTimeStamp(),
+            $prefix.'type' => $c->getType(),
+            $prefix.'user_id' => $c->getUserId(),
+            $prefix.'app_id' => $c->getAppId(),
         );
 
         return $a;