diff --git a/drivers/src/main/java/org/onosproject/driver/extensions/NiciraSetNshSpi.java b/drivers/src/main/java/org/onosproject/driver/extensions/NiciraSetNshSpi.java
index 2535870..1a168d0 100644
--- a/drivers/src/main/java/org/onosproject/driver/extensions/NiciraSetNshSpi.java
+++ b/drivers/src/main/java/org/onosproject/driver/extensions/NiciraSetNshSpi.java
@@ -21,7 +21,6 @@
 import org.onlab.util.KryoNamespace;
 import org.onosproject.net.flow.instructions.AbstractExtensionTreatment;
 import org.onosproject.net.flow.instructions.ExtensionTreatmentType;
-import org.onosproject.store.serializers.Ip4AddressSerializer;
 
 import com.google.common.base.MoreObjects;
 
@@ -32,10 +31,7 @@
 
     private int nshSpi;
 
-    private final KryoNamespace appKryo = new KryoNamespace.Builder()
-    .register(new Ip4AddressSerializer(), Integer.class)
-    .register(byte[].class)
-    .build();
+    private final KryoNamespace appKryo = new KryoNamespace.Builder().build();
 
     /**
      * Creates a new set nsh spi instruction.