diff --git a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapRegister.java b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapRegister.java
index 58244d7686..e044c3499b 100644
--- a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapRegister.java
+++ b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapRegister.java
@@ -292,6 +292,7 @@ public final class DefaultLispMapRegister implements LispMapRegister {
                     .withNonce(nonce)
                     .withKeyId(keyId)
                     .withAuthenticationData(authData)
+                    .withAuthDataLength(authLength)
                     .withMapRecords(mapRecords)
                     .build();
         }