diff --git a/monitor.c b/monitor.c
index 5851b6d..28a8c32 100644
--- a/monitor.c
+++ b/monitor.c
@@ -403,10 +403,12 @@ void monitor_protocol_event(MonitorEvent event, QObject *data)
     }
 
     QLIST_FOREACH(mon, &mon_list, entry) {
-        if (monitor_ctrl_mode(mon)) {
+        if (monitor_ctrl_mode(mon) &&
+            mon->mc->mode == QMODE_OPERATIONAL) {
             monitor_json_emitter(mon, QOBJECT(qmp));
         }
     }
+
     QDECREF(qmp);
 }
 
@@ -4242,12 +4244,34 @@ static int monitor_check_qmp_args(const mon_cmd_t *cmd, QDict *args)
     return err;
 }
 
+static int qmp_invalid_mode(const Monitor *mon, unsigned int cmd_flags)
+{
+    switch (mon->mc->mode) {
+        case QMODE_OPERATIONAL:
+            if (cmd_flags & HANDLER_HANDSHAKE_ONLY) {
+                return 1;
+            }
+            break;
+        case QMODE_HANDSHAKE:
+            if (!((cmd_flags & HANDLER_HANDSHAKE) ||
+                (cmd_flags & HANDLER_HANDSHAKE_ONLY))) {
+                return 1;
+            }
+            break;
+        default:
+            abort();
+    }
+
+    return 0;
+}
+
 static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
 {
     int err;
     QObject *obj;
     QDict *input, *args;
     const mon_cmd_t *cmd;
+    unsigned int cmd_flags;
     Monitor *mon = cur_mon;
     const char *cmd_name, *info_item;
 
@@ -4289,6 +4313,15 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
         qemu_error_new(QERR_COMMAND_NOT_FOUND, cmd_name);
         goto err_input;
     } else if (strstart(cmd_name, "query-", &info_item)) {
+        /* check if it exists and get its flags */
+        cmd = monitor_find_info_command(info_item);
+        if (!cmd) {
+            qemu_error_new(QERR_COMMAND_NOT_FOUND, cmd_name);
+            goto err_input;
+        }
+        cmd_flags = cmd->flags;
+
+        /* setup 'info' to call it */
         cmd = monitor_find_command("info");
         qdict_put_obj(input, "arguments",
                       qobject_from_jsonf("{ 'item': %s }", info_item));
@@ -4298,6 +4331,12 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
             qemu_error_new(QERR_COMMAND_NOT_FOUND, cmd_name);
             goto err_input;
         }
+        cmd_flags = cmd->flags;
+    }
+
+    if (qmp_invalid_mode(mon, cmd_flags)) {
+        qemu_error_new(QERR_COMMAND_NOT_FOUND, cmd_name);
+        goto err_input;
     }
 
     obj = qdict_get(input, "arguments");