1 files changed, 1 insertions, 0 deletions
diff --git a/proc.c b/proc.c
index 6424eeb4ff..bc47359e8e 100644
--- a/proc.c
+++ b/proc.c
@@ -941,6 +941,7 @@ mnew(VALUE klass, VALUE obj, ID id, VALUE mclass, int scope)
     rb_method_flag_t flag = NOEX_UNDEF;
 
   again:
+    if (klass) klass = RCLASS_ORIGIN(klass);
     me = rb_method_entry_without_refinements(klass, id, &defined_class);
     if (UNDEFINED_METHOD_ENTRY_P(me)) {
 	ID rmiss = rb_intern("respond_to_missing?");