diff --git a/plugin/fugitive.vim b/plugin/fugitive.vim
index c76ffa4..9a6a9d3 100644
--- a/plugin/fugitive.vim
+++ b/plugin/fugitive.vim
@@ -162,6 +162,7 @@ augroup fugitive
   autocmd!
   autocmd BufNewFile,BufReadPost * call s:Detect(expand('<amatch>:p'))
   autocmd FileType           netrw call s:Detect(expand('<afile>:p'))
+  autocmd User NERDTreeInit,NERDTreeNewRoot call s:Detect(b:NERDTreeRoot.path.str())
   autocmd VimEnter * if expand('<amatch>')==''|call s:Detect(getcwd())|endif
   autocmd BufWinLeave * execute getwinvar(+bufwinnr(+expand('<abuf>')), 'fugitive_leave')
 augroup END