diff --git a/autoload/lightline.vim b/autoload/lightline.vim
index 50b3fac..2609d6d 100644
--- a/autoload/lightline.vim
+++ b/autoload/lightline.vim
@@ -3,7 +3,7 @@
 " Version: 0.0
 " Author: itchyny
 " License: MIT License
-" Last Change: 2013/08/23 12:11:54.
+" Last Change: 2013/08/23 13:36:31.
 " =============================================================================
 
 let s:save_cpo = &cpo
@@ -12,7 +12,7 @@ set cpo&vim
 let s:_ = 1
 let s:is_win32term = (has('win32') || has('win64')) && !has('gui_running')
 
-function! lightline#update(...)
+function! lightline#update()
   if s:_ | call lightline#init() | endif
   let s = [lightline#statusline(0), lightline#statusline(1)]
   let w = winnr()
diff --git a/plugin/lightline.vim b/plugin/lightline.vim
index 834f536..895fe38 100644
--- a/plugin/lightline.vim
+++ b/plugin/lightline.vim
@@ -3,7 +3,7 @@
 " Version: 0.0
 " Author: itchyny
 " License: MIT License
-" Last Change: 2013/08/22 19:06:29.
+" Last Change: 2013/08/23 13:36:39.
 " =============================================================================
 
 let s:save_cpo = &cpo
@@ -14,8 +14,6 @@ augroup LightLine
   autocmd ColorScheme * call lightline#highlight()
   autocmd WinEnter,BufWinEnter * call lightline#update()
   autocmd CursorMoved,FileType * call lightline#update_once()
-  autocmd InsertLeave * call lightline#update(1)
-  autocmd InsertEnter * call lightline#update(0)
 augroup END
 
 let &cpo = s:save_cpo