1 files changed, 2 insertions, 0 deletions
diff --git a/class.c b/class.c
index 4d8db41f28..796fd26a73 100644
--- a/class.c
+++ b/class.c
@@ -558,6 +558,8 @@ class_instance_method_list(argc, argv, mod, func)
     list = st_init_numtable();
     for (; mod; mod = RCLASS(mod)->super) {
 	st_foreach(RCLASS(mod)->m_tbl, method_entry, (st_data_t)list);
+	if (BUILTIN_TYPE(mod) == T_ICLASS) continue;
+	if (FL_TEST(mod, FL_SINGLETON)) continue;
 	if (!recur) break;
     }
     ary = rb_ary_new();