diff --git a/autoload/SpaceVim/layers/tools.vim b/autoload/SpaceVim/layers/tools.vim
index b4fd5d425..a5ae35252 100644
--- a/autoload/SpaceVim/layers/tools.vim
+++ b/autoload/SpaceVim/layers/tools.vim
@@ -58,9 +58,9 @@ function! SpaceVim#layers#tools#config() abort
     if g:spacevim_filemanager ==# 'nerdtree'
         noremap <silent> <F3> :NERDTreeToggle<CR>
     endif
-    let g:NERDTreeWinPos='right'
-    let g:NERDTreeWinSize=31
-    let g:NERDTreeChDirMode=1
+    let g:NERDTreeWinPos= get(g:, 'NERDTreeWinPos', 'right')
+    let g:NERDTreeWinSize=get(g:, 'NERDTreeWinSize', 31)
+    let g:NERDTreeChDirMode=get(g:, 'NERDTreeChDirMode', 1)
     autocmd bufenter * if (winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree()) | q | endif
     augroup nerdtree_zvim
         autocmd!