diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/impl/VtnRscManager.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/impl/VtnRscManager.java
index acb666d..05754a4 100644
--- a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/impl/VtnRscManager.java
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/service/impl/VtnRscManager.java
@@ -164,7 +164,7 @@
 
         KryoNamespace.Builder serializer = KryoNamespace.newBuilder()
                 .register(KryoNamespaces.API)
-                .register(TenantId.class, DeviceId.class);
+                .register(TenantId.class, DeviceId.class, SegmentationId.class);
         l3vniMap = storageService
                 .<TenantId, SegmentationId>eventuallyConsistentMapBuilder()
                 .withName(L3VNIMAP).withSerializer(serializer)