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 4890657..9a9e9f0 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
@@ -93,8 +93,6 @@ import org.gcube.portlets.user.workspace.server.util.WsUtil;
 import org.gcube.portlets.user.workspace.shared.accounting.GxtAccountingEntryType;
 import org.gcube.portlets.user.workspace.shared.accounting.GxtAccountingField;
 
-import com.liferay.portal.model.Contact;
-
 /**
  * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
  *
diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/shortener/UrlEncoderUtil.java b/src/main/java/org/gcube/portlets/user/workspace/server/shortener/UrlEncoderUtil.java
index 1deec56..9774096 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/shortener/UrlEncoderUtil.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/shortener/UrlEncoderUtil.java
@@ -4,7 +4,6 @@
 package org.gcube.portlets.user.workspace.server.shortener;
 
 import java.io.UnsupportedEncodingException;
-import java.net.URLDecoder;
 import java.net.URLEncoder;
 import java.util.HashMap;
 import java.util.Map;