diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
index ff26eeb12b..1381d5f394 100644
--- a/src/Symfony/Component/Console/Application.php
+++ b/src/Symfony/Component/Console/Application.php
@@ -171,7 +171,7 @@ class Application
 
         if (function_exists('posix_isatty') && $this->getHelperSet()->has('dialog')) {
             $inputStream = $this->getHelperSet()->get('dialog')->getInputStream();
-            if (!posix_isatty($inputStream)) {
+            if (!@posix_isatty($inputStream)) {
                 $input->setInteractive(false);
             }
         }