diff --git a/vim/en.utf-8.add b/vim/en.utf-8.add
index b9394b0..b42d508 100644
--- a/vim/en.utf-8.add
+++ b/vim/en.utf-8.add
@@ -80,3 +80,4 @@ ACBT
 Haitao
 tex
 NFA
+subgraph
diff --git a/vim/en.utf-8.add.spl b/vim/en.utf-8.add.spl
index f3a305c..21ec696 100644
Binary files a/vim/en.utf-8.add.spl and b/vim/en.utf-8.add.spl differ
diff --git a/vim/vundle.vim b/vim/vundle.vim
index e9aabb7..8d9bc0b 100644
--- a/vim/vundle.vim
+++ b/vim/vundle.vim
@@ -42,7 +42,7 @@ filetype plugin indent on
 " ===================================================================================
 
 " --- Nerd Tree ---
-map <C-o> :NERDTreeToggle<CR>
+map <C-o> :NERDTreeToggle %<CR>
 let g:NERDTreeNodeDelimiter = "\u00a0" " -- Was seeing ^G character, and this should fix that
 
 " --- YouCompleteMe (YCM) ---