diff --git a/source/Ox/js/Array.js b/source/Ox/js/Array.js
index c3325f1c..1c96dfc4 100644
--- a/source/Ox/js/Array.js
+++ b/source/Ox/js/Array.js
@@ -374,6 +374,7 @@ Ox.merge <f> Merges an array with one or more other arrays
     > Ox.merge(1, [2, 3, 2], 1)
     [1, 2, 3, 2, 1]
 @*/
+// FIXME: [].concat exists!
 Ox.merge = function(arr) {
     arr = Ox.makeArray(arr);
     Ox.slice(arguments, 1).forEach(function(arg) {