diff --git a/src/kiss/Macros.hx b/src/kiss/Macros.hx
index 6ca505e..6196ea8 100644
--- a/src/kiss/Macros.hx
+++ b/src/kiss/Macros.hx
@@ -553,6 +553,7 @@ class Macros {
                         argList.push(propExp);
                         propertyDefs.push(
                             b.call(b.symbol("defprop"), [propExp]));
+                        // TODO allow &prop &mut or &mut &prop
                         switch (propExp.def) {
                             case TypedExp(_, {pos: _, def: Symbol(name)}):
                                 propertySetExps.push(