diff --git a/data/aut-num/AS4242428981 b/data/aut-num/AS4242428981
index a4fb257bd..e047e186d 100644
--- a/data/aut-num/AS4242428981
+++ b/data/aut-num/AS4242428981
@@ -1,4 +1,4 @@
-aut-num:            4242428981
+aut-num:            AS4242428981
 as-name:            Marshy Networks/AS4242428981
 descr:              Marshy Networks's AS
 admin-c:            MARSHY-DN42