diff --git a/vimrc b/vimrc
index 51606009..7b861e32 100644
--- a/vimrc
+++ b/vimrc
@@ -29,7 +29,7 @@ syntax on
 
 " Change leader to a comma because the backslash is too far away
 " That means all \x commands turn into ,x
-" The mapleader has to be set before vundle starts loading all 
+" The mapleader has to be set before vundle starts loading all
 " the plugins.
 let mapleader=","
 
@@ -50,7 +50,7 @@ set nowb
 " ================ Persistent Undo ==================
 " Keep undo history across sessions, by storing in file.
 " Only works all the time.
-if has('persistent_undo') && !isdirectory(expand('~').'/.vim/backups')
+if has('persistent_undo') && isdirectory(expand('~').'/.vim/backups')
   silent !mkdir ~/.vim/backups > /dev/null 2>&1
   set undodir=~/.vim/backups
   set undofile