diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 1dc6ac8177..04f1d36131 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -456,7 +456,7 @@ class Filesystem
         if (!is_dir($dir)) {
             $this->mkdir($dir);
         } elseif (!is_writable($dir)) {
-            throw new IOException(sprintf('Unable to write in the %s directory\n', $dir));
+            throw new IOException(sprintf('Unable to write in the %s directory.', $dir));
         }
 
         $tmpFile = tempnam($dir, basename($filename));