Index: openacs-4/packages/acs-templating/tcl/list-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-templating/tcl/list-procs.tcl,v
diff -u -N -r1.57.8.2 -r1.57.8.3
--- openacs-4/packages/acs-templating/tcl/list-procs.tcl	1 Oct 2013 08:47:20 -0000	1.57.8.2
+++ openacs-4/packages/acs-templating/tcl/list-procs.tcl	3 Oct 2013 09:23:38 -0000	1.57.8.3
@@ -3151,7 +3151,7 @@
     foreach option_list $filter_names_options_tmp {
 	set option_label [lindex $option_list 0]
 	set option_name [lindex $option_list 1]
-	if {[lsearch $client_property_filters "${name}:filter:${option_name}:properties"]<0} {
+	if {"${name}:filter:${option_name}:properties" ni $client_property_filters} {
 	    lappend filter_names_options [list $option_label $option_name]
 	}
     }