diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
index 59b93004c5..42ad9ba91c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
@@ -125,7 +125,7 @@ EOF
         $helper = new DescriptorHelper();
         $options['format'] = $input->getOption('format');
         $options['raw_text'] = $input->getOption('raw');
-        $options['output'] = $output;
+        $options['output'] = $io;
         $helper->describe($output, $object, $options);
 
         if (!$input->getArgument('name') && $input->isInteractive()) {