diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/DefaultMoveExtensionTreatment.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/DefaultMoveExtensionTreatment.java
index a2395b8..86b44cf 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/extensions/DefaultMoveExtensionTreatment.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/DefaultMoveExtensionTreatment.java
@@ -39,7 +39,7 @@
 
     private final KryoNamespace appKryo = new KryoNamespace.Builder()
             .register(byte[].class).register(Integer.class).register(Map.class)
-            .build();
+            .build("DefaultMoveExtensionTreatment");
 
     /**
      * Creates a new move Treatment.
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmit.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmit.java
index cecdbd3..e1b5be9 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmit.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmit.java
@@ -46,7 +46,7 @@
             .register(new PortNumberSerializer(), PortNumber.class)
             .register(Map.class).register(HashMap.class)
             .register(byte[].class)
-            .build();
+            .build("NiciraResubmit");
 
     /**
      * Creates a new resubmit instruction.
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmitTable.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmitTable.java
index 47757c3..b3183df 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmitTable.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraResubmitTable.java
@@ -47,7 +47,7 @@
             .register(new PortNumberSerializer(), PortNumber.class)
             .register(Map.class).register(HashMap.class)
             .register(byte[].class)
-            .build();
+            .build("NiciraResubmitTable");
 
     /**
      * Creates a new resubmit-table instruction.
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraSetTunnelDst.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraSetTunnelDst.java
index 40499bb..efd409a 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraSetTunnelDst.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraSetTunnelDst.java
@@ -39,7 +39,7 @@
     private final KryoNamespace appKryo = new KryoNamespace.Builder()
             .register(new Ip4AddressSerializer(), Ip4Address.class)
             .register(byte[].class)
-            .build();
+            .build("NiciraSetTunnelDst");
 
     /**
      * Creates a new set tunnel destination instruction.