diff --git a/README.md b/README.md
index 109da63de..a59aa7c8d 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ sudo apt-get install python python-setuptools python-virtualenv \
 ### Installation
 
 ```
-virtualenv --no-site-packages venv
+virtualenv --no-site-packages -p python2 venv
 ./venv/bin/python setup.py install
 sudo ./venv/bin/letsencrypt
 ```
diff --git a/letsencrypt/client/setup.sh b/letsencrypt/client/setup.sh
old mode 100644
new mode 100755
index fb35eb4f7..9db81cbd2
--- a/letsencrypt/client/setup.sh
+++ b/letsencrypt/client/setup.sh
@@ -1,2 +1,2 @@
-#!/usr/bin/sh
+#!/bin/sh
 cp options-ssl.conf /etc/letsencrypt/options-ssl.conf