diff --git a/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java b/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java
index 1549c30..0ceef4b 100644
--- a/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java
+++ b/core/store/serializers/src/main/java/org/onosproject/store/serializers/KryoNamespaces.java
@@ -217,6 +217,7 @@
             .register(Optional.class)
             .register(Collections.emptyList().getClass())
             .register(Collections.unmodifiableSet(Collections.emptySet()).getClass())
+            .register(Collections.singleton(Object.class).getClass())
             .build();
 
     /**