diff --git a/src/Symfony/Component/Process/Pipes/AbstractPipes.php b/src/Symfony/Component/Process/Pipes/AbstractPipes.php
index ffa6a88319fb..1a94755bd71c 100644
--- a/src/Symfony/Component/Process/Pipes/AbstractPipes.php
+++ b/src/Symfony/Component/Process/Pipes/AbstractPipes.php
@@ -134,9 +134,7 @@ protected function write()
         if (null === $this->input && !isset($this->inputBuffer[0])) {
             fclose($this->pipes[0]);
             unset($this->pipes[0]);
-        }
-
-        if (!$w) {
+        } elseif (!$w) {
             return array($this->pipes[0]);
         }
     }