diff --git a/src/Composer/Command/ConfigCommand.php b/src/Composer/Command/ConfigCommand.php
index 178831142..42a93437a 100644
--- a/src/Composer/Command/ConfigCommand.php
+++ b/src/Composer/Command/ConfigCommand.php
@@ -303,10 +303,6 @@ EOT
             'notify-on-install' => array($booleanValidator, $booleanNormalizer),
             'vendor-dir' => array('is_string', function ($val) { return $val; }),
             'bin-dir' => array('is_string', function ($val) { return $val; }),
-            'bin-compat' => array(
-                function ($val) { return in_array($val, array('auto', 'nosymlink', 'full')); },
-                function ($val) { return $val; }
-            ),
             'cache-dir' => array('is_string', function ($val) { return $val; }),
             'cache-files-dir' => array('is_string', function ($val) { return $val; }),
             'cache-repo-dir' => array('is_string', function ($val) { return $val; }),
@@ -317,6 +313,10 @@ EOT
                 function ($val) { return preg_match('/^\s*([0-9.]+)\s*(?:([kmg])(?:i?b)?)?\s*$/i', $val) > 0; },
                 function ($val) { return $val; }
             ),
+            'bin-compat' => array(
+                function ($val) { return in_array($val, array('auto', 'nosymlink', 'full')); },
+                function ($val) { return $val; }
+            ),
             'discard-changes' => array(
                 function ($val) { return in_array($val, array('stash', 'true', 'false', '1', '0'), true); },
                 function ($val) {
diff --git a/src/Composer/Config.php b/src/Composer/Config.php
index b4e1c38c2..200f30750 100644
--- a/src/Composer/Config.php
+++ b/src/Composer/Config.php
@@ -29,7 +29,6 @@ class Config
         'github-protocols' => array('git', 'https', 'ssh'),
         'vendor-dir' => 'vendor',
         'bin-dir' => '{$vendor-dir}/bin',
-        'bin-compat' => 'auto',
         'cache-dir' => '{$home}/cache',
         'cache-files-dir' => '{$cache-dir}/files',
         'cache-repo-dir' => '{$cache-dir}/repo',
@@ -37,6 +36,7 @@ class Config
         'cache-ttl' => 15552000, // 6 months
         'cache-files-ttl' => null, // fallback to cache-ttl
         'cache-files-maxsize' => '300MiB',
+        'bin-compat' => 'auto',
         'discard-changes' => false,
         'autoloader-suffix' => null,
         'optimize-autoloader' => false,