diff --git a/glib/gasyncqueue.c b/glib/gasyncqueue.c
index 8bb02793b..ce184b070 100644
--- a/glib/gasyncqueue.c
+++ b/glib/gasyncqueue.c
@@ -38,7 +38,7 @@
 #include "deprecated/gthread.h"
 
 /**
- * GAsyncQueue:
+ * GAsyncQueue: (copy-func g_async_queue_ref) (free-func g_async_queue_unref)
  *
  * An opaque data structure which represents an asynchronous queue.
  *