diff --git a/Manual.md b/Manual.md
index 8e10734bb2..871124cef2 100644
--- a/Manual.md
+++ b/Manual.md
@@ -380,7 +380,7 @@ available in repositories.
 - `python-module` For packages that use the Python module build method (setup.py).
 By default the module will be built for python2. The `python_versions` variable may
 be defined to set the allowed python versions to be built, i.e:
-`python_version="2 3"`.
+`python_version="2.7 3.3"`.
 
 - `waf3` For packages that use the Python3 `waf` build method with python3.