1 files changed, 1 insertions, 1 deletions
diff --git a/ext/tk/tkutil.c b/ext/tk/tkutil.c
index 58a382a41b..f87b674c6f 100644
--- a/ext/tk/tkutil.c
+++ b/ext/tk/tkutil.c
@@ -30,7 +30,7 @@ tk_s_new(argc, argv, class)
     VALUE obj = obj_alloc(class);
 
     rb_funcall2(obj, rb_intern("initialize"), argc, argv);
-    if (iterator_p()) rb_yield_0(obj, obj);
+    if (iterator_p()) rb_yield_0(obj, obj, 0);
     return obj;
 }