diff --git a/src/PathPreserver.php b/src/PathPreserver.php
index 21f6680..2164057 100644
--- a/src/PathPreserver.php
+++ b/src/PathPreserver.php
@@ -231,7 +231,7 @@ static public function file_exists($path) {
     $reset_perms = array();
     $folder = $path;
     while ($folder = dirname($folder)) {
-      if ($folder === '.' || $folder === '/') {
+      if ($folder === '.' || $folder === '/' || preg_match("/^.:\\\\$/", $folder)) {
         break;
       }
       elseif ($folder === '') {