diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/DownloadServlet.java b/src/main/java/org/gcube/portlets/user/workspace/server/DownloadServlet.java
index 31b4b29..368a029 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/DownloadServlet.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/DownloadServlet.java
@@ -17,11 +17,8 @@ import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
-import org.antlr.stringtemplate.language.Cat;
 import org.apache.commons.io.IOUtils;
-import org.gcube.common.core.scope.GCUBEScope;
 import org.gcube.common.core.utils.logging.GCUBELog;
-import org.gcube.portlets.user.homelibrary.home.HomeLibrary;
 import org.gcube.portlets.user.homelibrary.home.exceptions.InternalErrorException;
 import org.gcube.portlets.user.homelibrary.home.workspace.Workspace;
 import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceFolder;
diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceBuilder.java b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceBuilder.java
index 393e3fb..16776ed 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceBuilder.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceBuilder.java
@@ -85,8 +85,8 @@ import org.gcube.portlets.user.workspace.client.workspace.folder.item.gcube.GWTP
 import org.gcube.portlets.user.workspace.client.workspace.folder.item.gcube.GWTUrlDocument;
 import org.gcube.portlets.user.workspace.server.util.UserUtil;
 import org.gcube.portlets.user.workspace.server.util.Util;
-import org.gcube.portlets.user.workspace.shared.accounting.GxtAccountingField;
 import org.gcube.portlets.user.workspace.shared.accounting.GxtAccountingEntryType;
+import org.gcube.portlets.user.workspace.shared.accounting.GxtAccountingField;
 
 /**
  * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
index 204f869..15c25b4 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
@@ -22,7 +22,6 @@ import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceItemType;
 import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceSharedFolder;
 import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceSmartFolder;
 import org.gcube.portlets.user.homelibrary.home.workspace.accounting.AccountingEntry;
-import org.gcube.portlets.user.homelibrary.home.workspace.accounting.AccountingEntryRead;
 import org.gcube.portlets.user.homelibrary.home.workspace.exceptions.InsufficientPrivilegesException;
 import org.gcube.portlets.user.homelibrary.home.workspace.exceptions.ItemAlreadyExistException;
 import org.gcube.portlets.user.homelibrary.home.workspace.exceptions.ItemNotFoundException;
diff --git a/src/main/java/org/gcube/portlets/user/workspace/shared/accounting/GxtAccountingField.java b/src/main/java/org/gcube/portlets/user/workspace/shared/accounting/GxtAccountingField.java
index 918b2dc..594460c 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/shared/accounting/GxtAccountingField.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/shared/accounting/GxtAccountingField.java
@@ -5,8 +5,6 @@ import java.util.Date;
 
 import org.gcube.portlets.user.workspace.client.model.InfoContactModel;
 
-import com.extjs.gxt.ui.client.data.BaseModelData;
-
 /**
  * 
  * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it