diff --git a/data/aut-num/AS4242420589 b/data/aut-num/AS4242420589
index 2dce455b2..bd0a48b64 100644
--- a/data/aut-num/AS4242420589
+++ b/data/aut-num/AS4242420589
@@ -1,4 +1,4 @@
-aut-num:            4242420589
+aut-num:            AS4242420589
 as-name:            DEKTHEP-AS
 descr:              AS for DEKTHEP DN42 Network
 admin-c:            DEKTHEP-DN42