diff --git a/src/main/java/org/gcube/portlets/user/td/unionwizardwidget/client/UnionOperationInProgressCard.java b/src/main/java/org/gcube/portlets/user/td/unionwizardwidget/client/UnionOperationInProgressCard.java
index 024b2ae..2469ee0 100644
--- a/src/main/java/org/gcube/portlets/user/td/unionwizardwidget/client/UnionOperationInProgressCard.java
+++ b/src/main/java/org/gcube/portlets/user/td/unionwizardwidget/client/UnionOperationInProgressCard.java
@@ -147,7 +147,7 @@ public class UnionOperationInProgressCard extends WizardCard implements
 	}
 
 	@Override
-	public void monitorComplete(final TRId trId) {
+	public void monitorComplete(final TRId trId, OperationMonitor operationMonitor) {
 
 		Command sayComplete = new Command() {
 			public void execute() {
@@ -171,7 +171,7 @@ public class UnionOperationInProgressCard extends WizardCard implements
 
 	@Override
 	public void monitorFailed(Throwable caught, String reason,
-			String failureDetails) {
+			String failureDetails, OperationMonitor operationMonitor) {
 		if (caught instanceof TDGWTSessionExpiredException) {
 			getEventBus()
 					.fireEvent(
@@ -189,7 +189,7 @@ public class UnionOperationInProgressCard extends WizardCard implements
 	}
 
 	@Override
-	public void monitorStopped(final TRId trId, String reason, String details) {
+	public void monitorStopped(final TRId trId, String reason, String details, OperationMonitor operationMonitor) {
 
 		Command sayComplete = new Command() {
 			public void execute() {