diff --git a/data/route/172.20.192.0_28 b/data/route/172.20.192.0_28
index 967b6e92f..310d73748 100644
--- a/data/route/172.20.192.0_28
+++ b/data/route/172.20.192.0_28
@@ -1,5 +1,6 @@
 route:              172.20.192.0/28
 descr:              ATP's DN42
 origin:             AS4242420003
+max-length:         28
 mnt-by:             ATP-MNT
 source:             DN42
diff --git a/data/route6/fd25:5547:5a89::_48 b/data/route6/fd25:5547:5a89::_48
index e6701bfdc..47cd5439f 100644
--- a/data/route6/fd25:5547:5a89::_48
+++ b/data/route6/fd25:5547:5a89::_48
@@ -1,5 +1,6 @@
 route6:             fd25:5547:5a89::/48
 descr:              ATP's DN42
 origin:             AS4242420003
+max-length:         48
 mnt-by:             ATP-MNT
 source:             DN42