1 files changed, 1 insertions, 1 deletions
diff --git a/class.c b/class.c
index 413355ff77..f92ceda8e4 100644
--- a/class.c
+++ b/class.c
@@ -662,7 +662,7 @@ rb_scan_args(argc, argv, fmt, va_alist)
 
     if (*p == '&') {
 	var = va_arg(vargs, VALUE*);
-	if (rb_iterator_p()) {
+	if (rb_block_given_p()) {
 	    *var = rb_f_lambda();
 	}
 	else {