diff --git a/data/inetnum/172.20.72.0_21 b/data/inetnum/172.20.72.0_21
index 66633e674..195d36937 100644
--- a/data/inetnum/172.20.72.0_21
+++ b/data/inetnum/172.20.72.0_21
@@ -4,7 +4,7 @@ descr:              zentralwerk network
 policy:             reserved
 remarks:            Contact eri for allocation information.
 org:                ORG-ZENTRALWERK
-mnt-by:             ERI-MNT
+mnt-by:             ZW-MNT
 status:             ALLOCATED
 cidr:               172.20.72.0/21
 source:             DN42