diff --git a/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java b/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java
index eb23083..2410493 100644
--- a/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java
+++ b/src/main/java/org/gcube/portlets/user/td/csvexportwidget/client/CSVOperationInProgressCard.java
@@ -160,12 +160,21 @@ public class CSVOperationInProgressCard extends WizardCard implements
 
 	public void operationFailed(Throwable caught, String reason,
 			String failureDetails) {
-		AlertMessageBox d = new AlertMessageBox("Error in CSV Export", reason);
-		d.addHideHandler(new HideHandler() {
-			public void onHide(HideEvent event) {
-			}
-		});
-		d.show();
+		if (caught instanceof TDGWTSessionExpiredException) {
+			getEventBus()
+					.fireEvent(
+							new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+		} else {
+
+			AlertMessageBox d = new AlertMessageBox("Error in CSV Export",
+					reason);
+			d.addHideHandler(new HideHandler() {
+				public void onHide(HideEvent event) {
+				}
+			});
+			d.show();
+		}
 	}
 
 	@Override