diff --git a/autoload/SpaceVim/api/vim.vim b/autoload/SpaceVim/api/vim.vim
index 1820e3bbc..f97830d82 100644
--- a/autoload/SpaceVim/api/vim.vim
+++ b/autoload/SpaceVim/api/vim.vim
@@ -107,7 +107,7 @@ elseif has('lua')
     endfunction
 else
     function! s:self.buf_line_count(buf) abort
-
+      return len(getbufline(a:buf, 1, '$'))
     endfunction
 endif