1 files changed, 1 insertions, 1 deletions
diff --git a/encoding.c b/encoding.c
index 4d044d1cba..5b9f2a0331 100644
--- a/encoding.c
+++ b/encoding.c
@@ -1268,7 +1268,7 @@ enc_compatible_p(VALUE klass, VALUE str1, VALUE str2)
 static VALUE
 enc_dump(int argc, VALUE *argv, VALUE self)
 {
-    rb_scan_args(argc, argv, "01", 0);
+    rb_check_arity(argc, 0, 1);
     return enc_name(self);
 }