diff --git a/README.md b/README.md
index 863503cfe..17842b15d 100644
--- a/README.md
+++ b/README.md
@@ -16,14 +16,14 @@ This may take around 5 minutes. Certainly better than the several hours it takes
 ## Advanced installation (for development)
 
 The bootstrap script allows source git repository URLs to be overridden to include customizations from your own 
-repositories. The OVERRIDE_GITRECEIVE_URL, OVERRIDE_BUILDSTEP_REPO and OVERRIDE_DOKKU_REPO environment variables
+repositories. The GITRECEIVE_URL, BUILDSTEP_REPO and DOKKU_REPO environment variables
 may be set to override the defaults (see the bootstrap.sh script for how these apply):
 
 Example:
 
     $ wget j.mp/dokku-bootstrap
     $ chmod +x bootstrap.sh
-    $ OVERRIDE_DOKKU_REPO=https://github.com/yourusername/dokku.git bootstrap.sh
+    $ DOKKU_REPO=https://github.com/yourusername/dokku.git bootstrap.sh
 
 ## Configuring
 
diff --git a/bootstrap.sh b/bootstrap.sh
index c73c5ed50..6399016a4 100644
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -1,8 +1,8 @@
 # Repository locations - set environment variables to override defaults
 #  e.g. OVERRIDE_DOKKU_REPO=https://github.com/yourusername/dokku.git bootstrap.sh
-GITRECEIVE_URL=${OVERRIDE_GITRECEIVE_URL:-"https://raw.github.com/progrium/gitreceive/master/gitreceive"}
-BUILDSTEP_REPO=${OVERRIDE_BUILDSTEP_REPO:-"https://github.com/progrium/buildstep.git"}
-DOKKU_REPO=${OVERRIDE_DOKKU_REPO:-"https://github.com/progrium/dokku.git"}
+GITRECEIVE_URL=${GITRECEIVE_URL:-"https://raw.github.com/progrium/gitreceive/master/gitreceive"}
+BUILDSTEP_REPO=${BUILDSTEP_REPO:-"https://github.com/progrium/buildstep.git"}
+DOKKU_REPO=${DOKKU_REPO:-"https://github.com/progrium/dokku.git"}
 
 # Docker and base dependencies
 apt-get install -y linux-image-extra-`uname -r`