diff --git a/autoload/lightline.vim b/autoload/lightline.vim
index e1c791d..17a5d1f 100644
--- a/autoload/lightline.vim
+++ b/autoload/lightline.vim
@@ -2,7 +2,7 @@
 " Filename: autoload/lightline.vim
 " Author: itchyny
 " License: MIT License
-" Last Change: 2016/04/14 00:16:41.
+" Last Change: 2016/04/15 00:51:48.
 " =============================================================================
 
 let s:save_cpo = &cpo
@@ -345,9 +345,9 @@ endfunction
 function! s:subseparator(components, subseparator, expanded) abort
   let [a, c, f, v] = [ a:components, s:lightline.component, s:lightline.component_function,  s:lightline.component_visible_condition ]
   let xs = map(range(len(a:components)), 'a:expanded[v:val] ? "1" :
-        \ has_key(f, a[v:val]) ? (exists("*".f[a[v:val]]) ? "(".f[a[v:val]]."()!=#\"\")" : "(exists(\"*".f[a[v:val]]."\")&&".f[a[v:val]]."()!=#\"\")") :
+        \ has_key(f, a[v:val]) ? (exists("*".f[a[v:val]]) ? "" : "exists(\"*".f[a[v:val]]."\")&&").f[a[v:val]]."()!=#\"\"" :
         \ has_key(v, a[v:val]) ? "(" . v[a[v:val]] . ")" : has_key(c, a[v:val]) ? "1" : "0"')
-  return '%{' . (xs[0] !=# '1' ? xs[0] . '&&' : '') . '(' . join(xs[1:], '||') . ')?"' . a:subseparator . '":""}'
+  return '%{' . (xs[0] ==# '1' ? '' : xs[0] . '&&(') . join(xs[1:], '||') . (xs[0] ==# '1' ? '' : ')') . '?"' . a:subseparator . '":""}'
 endfunction
 
 function! lightline#concatenate(xs, right) abort