diff --git a/doc/snac.8 b/doc/snac.8
index bdfd48b..b73591e 100644
--- a/doc/snac.8
+++ b/doc/snac.8
@@ -197,6 +197,8 @@ If set to true,
 .Nm
 will use the FastCGI interface to communicate with the upper level
 http server, that must be configured accordingly.
+.It Ic disable_history
+If set to true, history monthly snapshots are not served nor their links shown.
 .El
 .Pp
 You must restart the server to make effective these changes.