diff --git a/README b/README
index c06ee947..4d82e402 100644
--- a/README
+++ b/README
@@ -86,7 +86,7 @@ ended up with problems.
 Whenever you have a problem, always double-check that you're running the correct python version. 
 You'll probably have to tweak your $PATH.
 
-To setup a build machine under Ubuntu 12.04 and up, install those packages: python3, python3-pyqt4,
+To setup a build machine under Ubuntu 12.04 and up, install those packages: python3-dev, python3-pyqt4,
 pyqt4-dev-tools, mercurial and then python3-setuptools. Once you've done that, install pip with
 `easy_install`. Once you've done that, you can then perform "The easy way!" installation.