diff --git a/gtk/gtkapplication-dbus.c b/gtk/gtkapplication-dbus.c
index 667d2cae3e..9fb79f405c 100644
--- a/gtk/gtkapplication-dbus.c
+++ b/gtk/gtkapplication-dbus.c
@@ -338,7 +338,7 @@ gtk_application_impl_dbus_inhibit (GtkApplicationImpl         *impl,
   res = g_dbus_proxy_call_sync (dbus->sm_proxy,
                                 "Inhibit",
                                 g_variant_new ("(s@usu)",
-                                               g_application_get_application_id (G_APPLICATION (impl->application)),
+                                               dbus->app_id,
                                                gtk_application_impl_dbus_get_window_system_id (dbus, window),
                                                reason,
                                                flags),