diff --git a/usr.bin/vmstat/vmstat.c b/usr.bin/vmstat/vmstat.c
index 6a3440aaa5a0..cb8e43f1234f 100644
--- a/usr.bin/vmstat/vmstat.c
+++ b/usr.bin/vmstat/vmstat.c
@@ -1643,6 +1643,9 @@ display_object(struct kinfo_vmobject *kvo)
 	case KVME_TYPE_SG:
 		str = "sg";
 		break;
+	case KVME_TYPE_MGTDEVICE:
+		str = "md";
+		break;
 	case KVME_TYPE_UNKNOWN:
 	default:
 		str = "??";