diff --git a/man/man5/monitorix.conf.5 b/man/man5/monitorix.conf.5
index d8b7e85..fd10069 100644
--- a/man/man5/monitorix.conf.5
+++ b/man/man5/monitorix.conf.5
@@ -176,6 +176,13 @@ This option will synchronise the rrd file access by creating the file \fI/tmp/mo
 Default value: \fIn\fP
 .RE
 .P
+.BI enable_relative_urls
+.RS
+This option will change all URLs in the graphs to relative, instead of absolute URLs.
+.P
+Default value: \fIn\fP
+.RE
+.P
 .BI include_dir
 .RS
 The main configuration file is usually called \fImonitorix.conf\fP and its location is provided as part of the command line arguments. In addition, other configuration files may be loaded placing them in the directory pointed by this option. The names must end with .conf to be included.