diff --git a/lib/nerdtree/nerdtree.vim b/lib/nerdtree/nerdtree.vim
index 1404cee..ffbc9d3 100644
--- a/lib/nerdtree/nerdtree.vim
+++ b/lib/nerdtree/nerdtree.vim
@@ -21,7 +21,7 @@ function! s:NERDTree.changeRoot(node)
 
     "change dir to the dir of the new root if instructed to
     if g:NERDTreeChDirMode ==# 2
-        exec "cd " . self.root.path.str({'format': 'Edit'})
+        call self.root.path.changeToDir()
     endif
 
     call self.render()