diff --git a/monitor.c b/monitor.c
index 3209875..ab15289 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1301,7 +1301,11 @@
     qemu_system_reset_request();
 }
 
-static void do_system_powerdown(Monitor *mon, const QDict *qdict)
+/**
+ * do_system_powerdown(): Issue a machine powerdown
+ */
+static void do_system_powerdown(Monitor *mon, const QDict *qdict,
+                                QObject **ret_data)
 {
     qemu_system_powerdown_request();
 }
diff --git a/qemu-monitor.hx b/qemu-monitor.hx
index b116b5e..3efc716 100644
--- a/qemu-monitor.hx
+++ b/qemu-monitor.hx
@@ -482,7 +482,8 @@
         .args_type  = "",
         .params     = "",
         .help       = "send system power down event",
-        .mhandler.cmd = do_system_powerdown,
+        .user_print = monitor_user_noop,
+        .mhandler.cmd_new = do_system_powerdown,
     },
 
 STEXI