diff --git a/data/aut-num/AS4242421129 b/data/aut-num/AS4242421129
index 7129f5f0a..793bb1fed 100644
--- a/data/aut-num/AS4242421129
+++ b/data/aut-num/AS4242421129
@@ -2,5 +2,5 @@ aut-num:            AS4242421129
 as-name:            WILLY AS NUM
 admin-c:            WILLY-DN42
 tech-c:             WILLY-DN42
-mnt-by:             WILY-MNT
+mnt-by:             WILLY-MNT
 source:             DN42