diff --git a/monitor.c b/monitor.c
index 37ca4e798d..c49214cd8f 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4339,6 +4339,7 @@ static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
     return;
 
 err:
+    /* FIXME overtakes queued in-band commands, wrong when !qmp_is_oob() */
     monitor_qmp_respond(mon, NULL, err, NULL);
     qobject_unref(req);
 }
diff --git a/tests/qmp-test.c b/tests/qmp-test.c
index a7b6ec98e4..9eb20a1a18 100644
--- a/tests/qmp-test.c
+++ b/tests/qmp-test.c
@@ -241,6 +241,13 @@ static void test_qmp_oob(void)
     unblock_blocked_cmd();
     recv_cmd_id(qts, "ib-blocks-1");
     recv_cmd_id(qts, "ib-quick-1");
+
+    /* FIXME certain in-band errors overtake slow in-band command */
+    send_cmd_that_blocks(qts, "blocks-2");
+    qtest_async_qmp(qts, "{ 'id': 'err-2' }");
+    recv_cmd_id(qts, NULL);
+    unblock_blocked_cmd();
+    recv_cmd_id(qts, "blocks-2");
     cleanup_blocking_cmd();
 
     qtest_quit(qts);