diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
index fc30e460e9b15..9e4dd2d80dc5e 100644
--- a/src/Symfony/Component/Console/Application.php
+++ b/src/Symfony/Component/Console/Application.php
@@ -170,6 +170,13 @@ public function doRun(InputInterface $input, OutputInterface $output)
             $input->setInteractive(false);
         }
 
+        if (function_exists('posix_isatty') && $this->getHelperSet()->has('dialog')) {
+            $inputStream = $this->getHelperSet()->get('dialog')->getInputStream();
+            if (!posix_isatty($inputStream)) {
+                $input->setInteractive(false);
+            }
+        }
+
         if (true === $input->hasParameterOption(array('--quiet', '-q'))) {
             $output->setVerbosity(OutputInterface::VERBOSITY_QUIET);
         } elseif (true === $input->hasParameterOption(array('--verbose', '-v'))) {
diff --git a/src/Symfony/Component/Console/Helper/DialogHelper.php b/src/Symfony/Component/Console/Helper/DialogHelper.php
index 8d73addcf0e1a..c1dd5813e6aac 100644
--- a/src/Symfony/Component/Console/Helper/DialogHelper.php
+++ b/src/Symfony/Component/Console/Helper/DialogHelper.php
@@ -117,6 +117,16 @@ public function setInputStream($stream)
         $this->inputStream = $stream;
     }
 
+    /**
+     * Returns the helper's input stream
+     *
+     * @return string
+     */
+    public function getInputStream()
+    {
+        return $this->inputStream;
+    }
+
     /**
      * Returns the helper's canonical name
      */