diff --git a/monitor.c b/monitor.c
index c1add2ce09b397a0e90fa71b36dc402717b08b5b..bd0810df4d962ef3ea70018f5829d24b4c64eb7b 100644
--- a/monitor.c
+++ b/monitor.c
@@ -503,9 +503,9 @@ int monitor_fprintf(FILE *stream, const char *fmt, ...)
     return 0;
 }
 
-static void qmp_send_response(Monitor *mon, QDict *rsp)
+static void qmp_send_response(Monitor *mon, const QDict *rsp)
 {
-    QObject *data = QOBJECT(rsp);
+    const QObject *data = QOBJECT(rsp);
     QString *json;
 
     json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :