diff --git a/Makefile b/Makefile
index 9cad4e8..e7d8b85 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,13 @@ DISTRO ?= $(shell dirname $(RELEASE))
 CODENAME ?= $(shell basename $(RELEASE))
 
 FAB_ARCH := $(shell dpkg --print-architecture)
-MIRROR ?= http://deb.debian.org/debian
+ifeq ($(DISTRO), debian)
+	MIRROR ?= http://deb.debian.org/debian
+else ifeq ($(DISTRO), ubuntu)
+	MIRROR ?= http://archive.ubuntu.com/ubuntu
+else ifeq ($(MIRROR),)
+$(error Distro '$(DISTRO)' not suported)
+endif
 VARIANT ?= minbase
 EXTRA_PKGS ?= gpg,gpg-agent,ca-certificates
 REMOVELIST ?= ./removelist
diff --git a/README.rst b/README.rst
index f2cf81f..4e38f51 100644
--- a/README.rst
+++ b/README.rst
@@ -2,12 +2,13 @@ About
 =====
 
 This project builds a Debian ``bootstrap`` for use as a base for
-building TurnKey GNU/Linux appliances.
+building TurnKey GNU/Linux appliances. It also supports building an
+Ubuntu base. Please note that TurnKey is built on Debian, Ubuntu
+support should be considered "second class".
 
 A ``bootstrap`` is the minimal root filesystem in which packages can
-be installed. As of v16.0 / Debian 10/Buster TurnKey uses a default
-"minbase" variant Debian bootstrap, with the addition of a couple of
-packages.
+be installed. TurnKey uses a default "minbase" variant Debian bootstrap,
+with the addition of a couple of packages.
 
 For further info please run::