diff --git a/data/dns/duckl1ng.dn42 b/data/dns/duckl1ng.dn42
index dacc6178f..840e10fbb 100644
--- a/data/dns/duckl1ng.dn42
+++ b/data/dns/duckl1ng.dn42
@@ -3,5 +3,5 @@ admin-c:            DUCKL1NG-DN42
 tech-c:             DUCKL1NG-DN42
 mnt-by:             DUCKL1NG-MNT
 nserver:            ns1.duckl1ng.dn42 172.21.86.115
-nserver:            ns1.duckl1ng.dn42 fd7c:3b4:da0:d050::a
+nserver:            ns1.duckl1ng.dn42 fd7c:da0:3b4:d050::a
 source:             DN42