diff --git a/site_ansto/instrument/config/environment/sct_cybaman.tcl b/site_ansto/instrument/config/environment/sct_cybaman.tcl
index cab78402..787d52df 100644
--- a/site_ansto/instrument/config/environment/sct_cybaman.tcl
+++ b/site_ansto/instrument/config/environment/sct_cybaman.tcl
@@ -1140,7 +1140,7 @@ debug_log "Creating node $nodeName"
 #
 # @param name, the name of the goniometer (eg gon1)
 # @param IP, the IP address of  the device, this can be a hostname, (eg ca1-kowari)
-# @param port, the IP protocol port number of the device
+# @param port, the IP protocol port number of the device (62944)
 proc add_cybaman {name IP port terminator {_tol 1.0}} {
   set fd [open "/tmp/cybaman.log" a]
   if {[SplitReply [environment_simulation]]=="false"} {