diff --git a/vim/.vimrc b/vim/.vimrc
index eda24a0..63c72ad 100644
--- a/vim/.vimrc
+++ b/vim/.vimrc
@@ -209,6 +209,7 @@ Plug 'janko-m/vim-test'
 " endif
 
 Plug 'preservim/nerdtree'
+  nmap <silent> <leader>n :NERDTreeToggle<CR>
 
 " debug
 Plug 'tweekmonster/startuptime.vim'