diff --git a/site_ansto/instrument/bilby/config/anticollider/anticollider.tcl b/site_ansto/instrument/bilby/config/anticollider/anticollider.tcl
index 53ad9104..654b2446 100644
--- a/site_ansto/instrument/bilby/config/anticollider/anticollider.tcl
+++ b/site_ansto/instrument/bilby/config/anticollider/anticollider.tcl
@@ -15,7 +15,7 @@ namespace eval ::anticollider {
       set ap_limit [expr [SplitReply [$ap posit2unit $apD10_posit]] - $aptol]
       set acrule [subst {forbid {5 inf} for $ap when $col in {-inf $col_limit} }]
       lappend ::anticollider::veto_rules $acrule
-      set acrule [subst {forbid {-inf inf} for $col when $ap in {$ap_limit inf} }]
+      set acrule [subst {forbid {-inf $col_limit} for $col when $ap in {$ap_limit inf} }]
       lappend ::anticollider::veto_rules $acrule
       anticollision register $col
       anticollision register $ap