From 6609b0414e63d4c37e8af7a301ec87c6db9512c8 Mon Sep 17 00:00:00 2001
From: Pedro Algarvio <pedro@algarvio.me>
Date: Mon, 8 Jul 2013 19:49:10 +0100
Subject: [PATCH] Set defaults to `None` instead of `''`.

---
 salt/modules/virtualenv_mod.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/salt/modules/virtualenv_mod.py b/salt/modules/virtualenv_mod.py
index 927337797f..fd07f65f89 100644
--- a/salt/modules/virtualenv_mod.py
+++ b/salt/modules/virtualenv_mod.py
@@ -39,10 +39,10 @@ def create(path,
            system_site_packages=False,
            distribute=False,
            clear=False,
-           python='',
-           extra_search_dir='',
+           python=None,
+           extra_search_dir=None,
            never_download=False,
-           prompt='',
+           prompt=None,
            symlinks=False,
            upgrade=False,
            runas=None):