diff --git a/src/Dokuwiki/Filesystem.php b/src/Dokuwiki/Filesystem.php
index 1217ca6..9087a4c 100644
--- a/src/Dokuwiki/Filesystem.php
+++ b/src/Dokuwiki/Filesystem.php
@@ -182,6 +182,8 @@ class Filesystem
             {
                 case is_dir($file):
 
+                    $this->_tree[$path] = [];
+
                     $this->_index($file);
 
                 break;