1 files changed, 1 insertions, 1 deletions
diff --git a/thread_sync.c b/thread_sync.c
index 131ace2fda..94e6340b16 100644
--- a/thread_sync.c
+++ b/thread_sync.c
@@ -858,7 +858,7 @@ rb_queue_initialize(int argc, VALUE *argv, VALUE self)
     list_head_init(queue_waitq(q));
     rb_scan_args(argc, argv, "01", &initial);
     if (argc == 1) {
-        rb_ary_concat(q->que, rb_convert_type(initial, T_ARRAY, "Array", "to_ary"));
+        rb_ary_concat(q->que, rb_to_array(initial));
     }
     return self;
 }