diff --git a/source/Ox/js/Collection.js b/source/Ox/js/Collection.js
index fc823983..ef8c6096 100644
--- a/source/Ox/js/Collection.js
+++ b/source/Ox/js/Collection.js
@@ -404,6 +404,7 @@ Ox.setPropertyOnce <f> Sets a property once
     0    
 @*/
 // fixme: strange name, and shouldn't it return the full array?
+// fixme: unused, there is OptionGroup (which should be part of Ox.js)
 Ox.setPropertyOnce = function(arr, str) {
     var pos = -1;
     Ox.forEach(arr, function(v, i) {