diff --git a/hw/qdev.c b/hw/qdev.c
index 5ca126b49f..d3bf0fa43d 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -207,7 +207,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
     /* find driver */
     info = qdev_find_info(NULL, driver);
     if (!info || info->no_user) {
-        qerror_report(QERR_INVALID_PARAMETER, "driver");
+        qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "a driver name");
         error_printf_unless_qmp("Try with argument '?' for a list.\n");
         return NULL;
     }
diff --git a/monitor.c b/monitor.c
index e5f6b1cd12..5ddf97a3a7 100644
--- a/monitor.c
+++ b/monitor.c
@@ -970,7 +970,8 @@ static int do_cpu_set(Monitor *mon, const QDict *qdict, QObject **ret_data)
 {
     int index = qdict_get_int(qdict, "index");
     if (mon_set_cpu(index) < 0) {
-        qerror_report(QERR_INVALID_PARAMETER, "index");
+        qerror_report(QERR_INVALID_PARAMETER_VALUE, "index",
+                      "a CPU number");
         return -1;
     }
     return 0;
@@ -2405,7 +2406,8 @@ static int do_getfd(Monitor *mon, const QDict *qdict, QObject **ret_data)
     }
 
     if (qemu_isdigit(fdname[0])) {
-        qerror_report(QERR_INVALID_PARAMETER, "fdname");
+        qerror_report(QERR_INVALID_PARAMETER_VALUE, "fdname",
+                      "a name not starting with a digit");
         return -1;
     }