diff --git a/public_html/view/js/groups.js b/public_html/view/js/groups.js
index 9f5305f..213f452 100755
--- a/public_html/view/js/groups.js
+++ b/public_html/view/js/groups.js
@@ -1138,7 +1138,7 @@ if( section.permissions.element != null && !section.permissions.member_view ){
 					dropdown = "<div class='dropdown'>";
 
 					for( j = 0 ; j < members.length ; j++ ){
-						if( already.indexOf(members[j].id_machine) > -1 )
+						if( already.indexOf(members[j].id_user_cluster) > -1 )
 							continue;
 
 						dropdown += "<span data-memberid='"+members[j].id_user_cluster+"'>"+members[j].name+"</span>";