diff --git a/autoload/vundle/config.vim b/autoload/vundle/config.vim
index 5ecb30ba..3dd3da34 100644
--- a/autoload/vundle/config.vim
+++ b/autoload/vundle/config.vim
@@ -198,6 +198,7 @@ func! s:rtp_add_a()
   let appends = join(paths, '/after,').'/after'
   exec 'set rtp^='.fnameescape(prepends)
   exec 'set rtp+='.fnameescape(appends)
+  let &rtp = substitute(&rtp, ',\\', ',\\\\', 'g')
 endf