diff --git a/src/Symfony/Component/Process/ProcessPipes.php b/src/Symfony/Component/Process/ProcessPipes.php
index 5185d0a12b7b..874295b92b88 100644
--- a/src/Symfony/Component/Process/ProcessPipes.php
+++ b/src/Symfony/Component/Process/ProcessPipes.php
@@ -120,8 +120,8 @@ public function getDescriptors()
                 array('file', '/dev/tty', 'w'),
                 array('file', '/dev/tty', 'w'),
             );
-        } elseif ($this->ptyMode && Porcess::isPtySupported()) {
-            $descriptors = array(
+        } elseif ($this->ptyMode && Process::isPtySupported()) {
+            return array(
                 array('pty'),
                 array('pty'),
                 array('pty'),