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 83c9724..a12d042 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
@@ -23,7 +23,6 @@ import org.gcube.common.homelibary.model.items.type.WorkspaceItemType;
 import org.gcube.common.homelibrary.home.User;
 import org.gcube.common.homelibrary.home.exceptions.InternalErrorException;
 import org.gcube.common.homelibrary.home.workspace.Properties;
-import org.gcube.common.homelibrary.home.workspace.Workspace;
 import org.gcube.common.homelibrary.home.workspace.WorkspaceFolder;
 import org.gcube.common.homelibrary.home.workspace.WorkspaceItem;
 import org.gcube.common.homelibrary.home.workspace.WorkspaceSharedFolder;
@@ -41,7 +40,6 @@ import org.gcube.common.homelibrary.home.workspace.accounting.AccountingEntryRes
 import org.gcube.common.homelibrary.home.workspace.accounting.AccountingEntryShare;
 import org.gcube.common.homelibrary.home.workspace.accounting.AccountingEntryUnshare;
 import org.gcube.common.homelibrary.home.workspace.accounting.AccountingEntryUpdate;
-import org.gcube.common.homelibrary.home.workspace.exceptions.ItemNotFoundException;
 import org.gcube.common.homelibrary.home.workspace.folder.FolderBulkCreator;
 import org.gcube.common.homelibrary.home.workspace.folder.FolderItem;
 import org.gcube.common.homelibrary.home.workspace.folder.items.ExternalFile;