diff --git a/syntax/nerdtree.vim b/syntax/nerdtree.vim
index 172806b..68ca384 100644
--- a/syntax/nerdtree.vim
+++ b/syntax/nerdtree.vim
@@ -38,10 +38,10 @@ syn match NERDTreeFlags #\[.\]# containedin=NERDTreeDir
 
 "highlighing to conceal the delimiter around the file/dir name
 if has("conceal")
-    exec 'syn match NERDTreeNodeDelimiters #' . g:NERDTreeNodeDelimiter . '# conceal containedin=NERDTreeFile,NERDTreeLinkFile,NERDTreeExecFile,NERDTreeRO,NERDTreeDir'
+    exec 'syn match NERDTreeNodeDelimiters #' . g:NERDTreeNodeDelimiter . '# conceal containedin=ALL'
     setlocal conceallevel=3 concealcursor=nvic
 else
-    exec 'syn match NERDTreeNodeDelimiters #' . g:NERDTreeNodeDelimiter . '# containedin=NERDTreeFile,NERDTreeLinkFile,NERDTreeExecFile,NERDTreeRO,NERDTreeDir'
+    exec 'syn match NERDTreeNodeDelimiters #' . g:NERDTreeNodeDelimiter . '# containedin=ALL'
     hi! link NERDTreeNodeDelimiters Ignore
 endif