diff --git a/doc/manual/conf.py b/doc/manual/conf.py
index f13bb62bf..d53d3bc56 100644
--- a/doc/manual/conf.py
+++ b/doc/manual/conf.py
@@ -75,11 +75,9 @@ copyright = '2014-2016, M-Labs Limited'
 # built documents.
 #
 # The short X.Y version.
-# version = 'prerelease'
+version = artiq_version.split('+', 1)[0]
 # The full version, including alpha/beta/rc tags.
-# release = 'prerelease'
 release = artiq_version
-version = release.split('+', 1)[0]
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.