diff --git a/gio/gio-autocleanups.h b/gio/gio-autocleanups.h
index c3883830b..a3c0e043e 100644
--- a/gio/gio-autocleanups.h
+++ b/gio/gio-autocleanups.h
@@ -79,7 +79,6 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GInitable, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GInputStream, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GIOModule, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GIOStream, g_object_unref)
-G_DEFINE_AUTOPTR_CLEANUP_FUNC(GListModel, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GLoadableIcon, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GMemoryInputStream, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GMemoryOutputStream, g_object_unref)
diff --git a/gio/glistmodel.h b/gio/glistmodel.h
index 8c0116088..bfd000199 100644
--- a/gio/glistmodel.h
+++ b/gio/glistmodel.h
@@ -31,12 +31,9 @@
 
 G_BEGIN_DECLS
 
-#define G_TYPE_LIST_MODEL            (g_list_model_get_type ())
-#define G_LIST_MODEL(inst)           (G_TYPE_CHECK_INSTANCE_CAST ((inst), G_TYPE_LIST_MODEL, GListModel))
-#define G_IS_LIST_MODEL(inst)        (G_TYPE_CHECK_INSTANCE_TYPE ((inst), G_TYPE_LIST_MODEL))
-#define G_LIST_MODEL_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), G_TYPE_LIST_MODEL, GListModelInterface))
-
-typedef struct _GListModelInterface GListModelInterface;
+#define G_TYPE_LIST_MODEL g_list_model_get_type ()
+GLIB_AVAILABLE_IN_2_44
+G_DECLARE_INTERFACE(GListModel, g_list_model, G, LIST_MODEL, GObject)
 
 struct _GListModelInterface
 {
@@ -50,9 +47,6 @@ struct _GListModelInterface
                                  guint       position);
 };
 
-GLIB_AVAILABLE_IN_2_44
-GType                   g_list_model_get_type                           (void) G_GNUC_CONST;
-
 GLIB_AVAILABLE_IN_2_44
 GType                   g_list_model_get_item_type                      (GListModel *list);