diff --git a/setup.cfg b/setup.cfg
index cf7693640..4c4aedce9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -37,6 +37,7 @@ keystoneauth1.plugin =
     noauth = cinderclient.contrib.noauth:CinderNoAuthLoader
 
 [build_sphinx]
+builder = html man
 all-files = 1
 warning-is-error = 1
 source-dir = doc/source