diff --git a/src/main/java/net/onrc/onos/api/batchoperation/BatchOperation.java b/src/main/java/net/onrc/onos/api/batchoperation/BatchOperation.java
index 93e9912..b4755e9 100644
--- a/src/main/java/net/onrc/onos/api/batchoperation/BatchOperation.java
+++ b/src/main/java/net/onrc/onos/api/batchoperation/BatchOperation.java
@@ -39,7 +39,7 @@
     /**
      * Adds an add-operation.
      *
-     * @param target IBatchOperationTarget to be added.
+     * @param target IBatchOperationTarget object to be added.
      * @return true if succeeded, false otherwise.
      */
     public boolean addAddOperation(T target) {
@@ -57,13 +57,14 @@
     }
 
     /**
-     * Adds a update-operation.
+     * Adds an update-operation.
+     * <p>
+     * The existing entry having the same ID with the new target is overwritten.
      *
-     * @param oldTargetId ID of the existing target to be overwritten.
-     * @param newTarget The new target to be added.
+     * @param target The new target to be used for the update.
      * @return true if succeeded, false otherwise.
      */
-    public boolean addUpdateOperation(BatchOperationTargetId oldTargetId, T newTarget) {
-        return ops.add(new UpdateOperation(oldTargetId, newTarget));
+    public boolean addUpdateOperation(T target) {
+        return ops.add(new UpdateOperation(target));
     }
 }
diff --git a/src/main/java/net/onrc/onos/api/batchoperation/UpdateOperation.java b/src/main/java/net/onrc/onos/api/batchoperation/UpdateOperation.java
index aaf649a..a2f368e 100644
--- a/src/main/java/net/onrc/onos/api/batchoperation/UpdateOperation.java
+++ b/src/main/java/net/onrc/onos/api/batchoperation/UpdateOperation.java
@@ -4,18 +4,15 @@
  * An update-operation entry of a batch operation.
  */
 public class UpdateOperation implements BatchOperationEntry {
-    private final BatchOperationTargetId oldTargetId;
-    private final IBatchOperationTarget newTarget;
+    private final IBatchOperationTarget target;
 
     /**
-     * Creates a update-operation with specified targets.
+     * Creates an update-operation with specified targets.
      *
-     * @param oldTargetId The ID to be overwritten.
-     * @param newTarget The new target to be added.
+     * @param target The new target to be used for the update.
      */
-    public UpdateOperation(BatchOperationTargetId oldTargetId, IBatchOperationTarget newTarget) {
-        this.oldTargetId = oldTargetId;
-        this.newTarget = newTarget;
+    public UpdateOperation(IBatchOperationTarget target) {
+        this.target = target;
     }
 
     @Override
@@ -24,21 +21,12 @@
     }
 
     /**
-     * Gets the old target ID to be overwritten.
+     * Gets the new target object to be used for the update.
      *
-     * @return The old target ID to be overwritten
+     * @return The new target object to be used for the update.
      */
-    public BatchOperationTargetId getOldTargetId() {
-        return oldTargetId;
-    }
-
-    /**
-     * Gets the new target object to be added.
-     *
-     * @return The new target object to be added.
-     */
-    public IBatchOperationTarget getNewTarget() {
-        return newTarget;
+    public IBatchOperationTarget getTarget() {
+        return target;
     }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/flowmanager/FlowManagerModule.java b/src/main/java/net/onrc/onos/core/flowmanager/FlowManagerModule.java
index 0c5be10..1f5f446 100644
--- a/src/main/java/net/onrc/onos/core/flowmanager/FlowManagerModule.java
+++ b/src/main/java/net/onrc/onos/core/flowmanager/FlowManagerModule.java
@@ -42,7 +42,7 @@
     @Override
     public boolean updateFlow(IFlow flow) {
         BatchOperation<IFlow> ops = new BatchOperation<IFlow>();
-        ops.addUpdateOperation(flow.getId(), flow);
+        ops.addUpdateOperation(flow);
         return executeBatch(ops);
     }
 
diff --git a/src/main/java/net/onrc/onos/core/matchaction/MatchActionModule.java b/src/main/java/net/onrc/onos/core/matchaction/MatchActionModule.java
index a734026..c1fbd8e 100644
--- a/src/main/java/net/onrc/onos/core/matchaction/MatchActionModule.java
+++ b/src/main/java/net/onrc/onos/core/matchaction/MatchActionModule.java
@@ -34,7 +34,7 @@
     @Override
     public boolean updateMatchAction(MatchAction matchAction) {
         BatchOperation<MatchAction> phase = new BatchOperation<MatchAction>();
-        phase.addUpdateOperation(matchAction.getId(), matchAction);
+        phase.addUpdateOperation(matchAction);
         MatchActionPlan plan = new MatchActionPlan();
         plan.addPhase(phase);
         return executePlan(plan);