diff --git a/autoload/airline/init.vim b/autoload/airline/init.vim
index e54829e..a5a5958 100644
--- a/autoload/airline/init.vim
+++ b/autoload/airline/init.vim
@@ -67,7 +67,7 @@ function! airline#init#bootstrap()
         \ 'highlight': 'airline_file',
         \ })
   call airline#parts#define_raw('file', '%f%m')
-  call airline#parts#define_raw('ffenc', '%{printf("%s%s",&fenc,strlen(&ff)>0?"[".&ff."]":"")}')
+  call airline#parts#define_function('ffenc', 'airline#parts#ffenc')
   call airline#parts#define_empty(['hunks', 'branch', 'tagbar', 'syntastic', 'whitespace'])
 endfunction
 
diff --git a/autoload/airline/parts.vim b/autoload/airline/parts.vim
index 9abbb89..56afc05 100644
--- a/autoload/airline/parts.vim
+++ b/autoload/airline/parts.vim
@@ -61,3 +61,7 @@ function! airline#parts#filetype()
   return &filetype
 endfunction
 
+function! airline#parts#ffenc()
+  return printf('%s%s', &fenc, strlen(&ff) > 0 ? '['.&ff.']' : '')
+endfunction
+