diff --git a/data/aut-num/AS4242420689 b/data/aut-num/AS4242420689
index 7e30ee8a2..19541e0b9 100644
--- a/data/aut-num/AS4242420689
+++ b/data/aut-num/AS4242420689
@@ -3,5 +3,5 @@ as-name:            AS-NIXLABS-DN42
 admin-c:            KNIJN-DN42
 tech-c:             KNIJN-DN42
 org:                ORG-NIXLABS
-mnt:                KNIJN-MNT
+mnt-by:             KNIJN-MNT
 source:             DN42