diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
index 56f1998..b827a5a 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
@@ -16,7 +16,6 @@ import org.gcube.data.analysis.tabulardata.service.tabular.TabularResource;
 import org.gcube.portal.custom.scopemanager.scopehelper.ScopeHelper;
 import org.gcube.portlets.user.td.gwtservice.server.file.FileUploadSession;
 import org.gcube.portlets.user.td.gwtservice.server.trservice.TRTasksManager;
-import org.gcube.portlets.user.td.gwtservice.shared.Constants;
 import org.gcube.portlets.user.td.gwtservice.shared.csv.CSVExportSession;
 import org.gcube.portlets.user.td.gwtservice.shared.csv.CSVImportSession;
 import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;