diff --git a/site_ansto/instrument/server_config.tcl b/site_ansto/instrument/server_config.tcl
index 3d7999ea..15dc588f 100644
--- a/site_ansto/instrument/server_config.tcl
+++ b/site_ansto/instrument/server_config.tcl
@@ -90,12 +90,13 @@ if {[info exists env(SICS_SIMULATION)] != 1} {
       VarMake sics_script_validator Text internal
       sics_script_validator true
       set sicsroot ../script_validator/
+      set syncport $serverport
       set telnetport    [expr {$telnetport    + 10}]
       set interruptport [expr {$interruptport + 10}]
       set serverport    [expr {$serverport    + 10}]
       set quieckport    [expr {$quieckport    + 10}]
       sics_simulation true
-      MakeSync localhost $serverport spy 007 ../log/syncfile.tcl
+      MakeSync localhost $syncport spy 007 ../log/syncfile.tcl
     }
     default {
       error "ERROR: SICS_SIMULATION must be full, script_validator, or fakedev, not $SICSIM"