diff --git a/site_ansto/instrument/config/scan/scan_common_1.tcl b/site_ansto/instrument/config/scan/scan_common_1.tcl
index cecd1a54..61bf00da 100644
--- a/site_ansto/instrument/config/scan/scan_common_1.tcl
+++ b/site_ansto/instrument/config/scan/scan_common_1.tcl
@@ -167,8 +167,8 @@ proc ::scan::check_scanvar {sobj uobj} {
     if [catch {
       ::scan::check_limit $scan_variable hardlowerlim $target
       ::scan::check_limit $scan_variable hardupperlim $target
-      ::scan::check_limit $scan_variable softlowerlim $target
-      ::scan::check_limit $scan_variable softupperlim $target
+      ::scan::check_limit $scan_variable softlowerlim $scan_start
+      ::scan::check_limit $scan_variable softupperlim $scan_start
     }] {
       return -code error $::errorInfo
     }