diff --git a/src/Symfony/Component/Console/Input/InputDefinition.php b/src/Symfony/Component/Console/Input/InputDefinition.php
index 9551e968c4..2db9222f1e 100644
--- a/src/Symfony/Component/Console/Input/InputDefinition.php
+++ b/src/Symfony/Component/Console/Input/InputDefinition.php
@@ -526,10 +526,6 @@ class InputDefinition
 
     private function formatDefaultValue($default)
     {
-        if (is_array($default) && $default === array_values($default)) {
-            return sprintf("array('%s')", implode("', '", $default));
-        }
-
-        return str_replace("\n", '', var_export($default, true));
+        return json_encode($default);
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/application_run2.txt b/src/Symfony/Component/Console/Tests/Fixtures/application_run2.txt
index f717033ad3..cad7dd5e32 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/application_run2.txt
+++ b/src/Symfony/Component/Console/Tests/Fixtures/application_run2.txt
@@ -3,7 +3,7 @@ Usage:
 
 Arguments:
  command               The command to execute
- command_name          The command name (default: 'help')
+ command_name          The command name (default: "help")
 
 Options:
  --xml                 To output help as XML
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/definition_astext.txt b/src/Symfony/Component/Console/Tests/Fixtures/definition_astext.txt
index 2ad6078e8b..9dd539088a 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/definition_astext.txt
+++ b/src/Symfony/Component/Console/Tests/Fixtures/definition_astext.txt
@@ -1,11 +1,11 @@
 <comment>Arguments:</comment>
  <info>foo       </info> The foo argument
  <info>baz       </info> The baz argument<comment> (default: true)</comment>
- <info>bar       </info> The bar argument<comment> (default: array('bar'))</comment>
+ <info>bar       </info> The bar argument<comment> (default: ["bar"])</comment>
 
 <comment>Options:</comment>
  <info>--foo</info> (-f) The foo option
  <info>--baz</info>      The baz option<comment> (default: false)</comment>
- <info>--bar</info> (-b) The bar option<comment> (default: 'bar')</comment>
- <info>--qux</info>      The qux option<comment> (default: array('foo', 'bar'))</comment><comment> (multiple values allowed)</comment>
- <info>--qux2</info>     The qux2 option<comment> (default: array (  'foo' => 'bar',))</comment><comment> (multiple values allowed)</comment>
+ <info>--bar</info> (-b) The bar option<comment> (default: "bar")</comment>
+ <info>--qux</info>      The qux option<comment> (default: ["foo","bar"])</comment><comment> (multiple values allowed)</comment>
+ <info>--qux2</info>     The qux2 option<comment> (default: {"foo":"bar"})</comment><comment> (multiple values allowed)</comment>