diff --git a/autoload/airline/extensions/branch.vim b/autoload/airline/extensions/branch.vim
index fe43977..baf30d3 100644
--- a/autoload/airline/extensions/branch.vim
+++ b/autoload/airline/extensions/branch.vim
@@ -221,7 +221,7 @@ if g:airline#init#async
   endfunction
 
   function! s:get_vcs_untracked_async(config, file)
-    if g:airline#util#is_windows && &shell =~ 'cmd'
+    if g:airline#init#is_windows && &shell =~ 'cmd'
       let cmd = a:config['cmd'] . shellescape(a:file)
     else
       let cmd = ['sh', '-c', a:config['cmd'] . shellescape(a:file)]
@@ -259,7 +259,7 @@ if g:airline#init#async
   endfunction
 
   function! s:get_mq_async(cmd, file)
-    if g:airline#util#is_windows && &shell =~ 'cmd'
+    if g:airline#init#is_windows && &shell =~ 'cmd'
       let cmd = a:cmd
     else
       let cmd = ['sh', '-c', a:cmd]
diff --git a/autoload/airline/init.vim b/autoload/airline/init.vim
index 4ee6fdb..2ef6a05 100644
--- a/autoload/airline/init.vim
+++ b/autoload/airline/init.vim
@@ -19,7 +19,7 @@ function! airline#init#bootstrap()
   let g:airline#init#bootstrapping = 1
 
   let g:airline#init#async = (has("nvim") || (v:version >= 800 && has('job')))
-  let g:airline#util#is_windows = has('win32') || has('win64')
+  let g:airline#init#is_windows = has('win32') || has('win64')
 
   call s:check_defined('g:airline_detect_modified', 1)
   call s:check_defined('g:airline_detect_paste', 1)