Index: doc/proposals/vtable.md
===================================================================
--- doc/proposals/vtable.md	(revision 62315a0dd8b45055a6c77e741012a5876200d6d7)
+++ doc/proposals/vtable.md	(revision f4c2f1a02753f281c59f650f4c89475f36279b0c)
@@ -220,5 +220,5 @@
     trait iterator(otype T, otype Item) {
         bool has_next(T const &);
-        Item get_next(T const *);
+        Item get_next(T &);
     }