diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 34b0a9ba671a..0e250b3669f4 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -336,11 +336,30 @@ public function makePathRelative($endPath, $startPath)
      *                               Valid options are:
      *                                 - $options['override'] Whether to override an existing file on copy or not (see copy())
      *                                 - $options['copy_on_windows'] Whether to copy files instead of links on Windows (see symlink())
+     *                                 - $options['delete'] Default false Whether to delete files that are not in the source directory
      *
      * @throws IOException When file type is unknown
      */
     public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = array())
     {
+        $targetDir = rtrim($targetDir, '/\\');
+        $originDir = rtrim($originDir, '/\\');
+
+        // Iterate in destination folder to remove obsolete entries
+        if ($this->exists($targetDir) && isset($options['delete']) && $options['delete']) {
+            $deleteIterator = $iterator;
+            if (null === $deleteIterator) {
+                $flags = \FilesystemIterator::SKIP_DOTS;
+                $deleteIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($targetDir, $flags), \RecursiveIteratorIterator::CHILD_FIRST);
+            }
+            foreach ($deleteIterator as $file) {
+                $origin = str_replace($targetDir, $originDir, $file->getPathname());
+                if (!$this->exists($origin)) {
+                    $this->remove($file);
+                }
+            }
+        }
+
         $copyOnWindows = false;
         if (isset($options['copy_on_windows']) && !function_exists('symlink')) {
             $copyOnWindows = $options['copy_on_windows'];
@@ -351,9 +370,6 @@ public function mirror($originDir, $targetDir, \Traversable $iterator = null, $o
             $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($originDir, $flags), \RecursiveIteratorIterator::SELF_FIRST);
         }
 
-        $targetDir = rtrim($targetDir, '/\\');
-        $originDir = rtrim($originDir, '/\\');
-
         foreach ($iterator as $file) {
             $target = str_replace($originDir, $targetDir, $file->getPathname());
 
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index c4c5fcae0f6b..261add85eb91 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -798,6 +798,25 @@ public function testMirrorCopiesFilesAndDirectoriesRecursively()
         $this->assertTrue(is_dir($targetPath.'directory'));
         $this->assertFileEquals($file1, $targetPath.'directory'.DIRECTORY_SEPARATOR.'file1');
         $this->assertFileEquals($file2, $targetPath.'file2');
+
+        $this->filesystem->remove($file1);
+
+        $this->filesystem->mirror($sourcePath, $targetPath, null, array("delete" => FALSE));
+        $this->assertTrue($this->filesystem->exists($targetPath.'directory'.DIRECTORY_SEPARATOR.'file1'));
+
+        $this->filesystem->mirror($sourcePath, $targetPath, null, array("delete" => TRUE));
+        $this->assertFalse($this->filesystem->exists($targetPath.'directory'.DIRECTORY_SEPARATOR.'file1'));
+
+        file_put_contents($file1, 'FILE1');
+
+        $this->filesystem->mirror($sourcePath, $targetPath, null, array("delete" => TRUE));
+        $this->assertTrue($this->filesystem->exists($targetPath.'directory'.DIRECTORY_SEPARATOR.'file1'));
+
+        $this->filesystem->remove($directory);
+        $this->filesystem->mirror($sourcePath, $targetPath, null, array("delete" => TRUE));
+        $this->assertFalse($this->filesystem->exists($targetPath.'directory'));
+        $this->assertFalse($this->filesystem->exists($targetPath.'directory'.DIRECTORY_SEPARATOR.'file1'));
+
     }
 
     public function testMirrorCopiesLinks()