diff --git a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/CkanContentModeratorCheckConfigs.java b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/CkanContentModeratorCheckConfigs.java
index 6ef9f58..90b677d 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/CkanContentModeratorCheckConfigs.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/CkanContentModeratorCheckConfigs.java
@@ -123,9 +123,7 @@ public class CkanContentModeratorCheckConfigs {
 			};
 
 			timer.scheduleRepeating(500);
-
 		}
-
 	}
 
 	/**
diff --git a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/ContentModeratorToolbar.ui.xml b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/ContentModeratorToolbar.ui.xml
index 4b35248..c81f686 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/ContentModeratorToolbar.ui.xml
+++ b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/ContentModeratorToolbar.ui.xml
@@ -36,7 +36,7 @@
 				<b:Label ui:field="orderInfo" type="DEFAULT" addStyleNames="{style.margin-top-12}"></b:Label>
 			</b:Nav>
 			<b:Nav alignment="RIGHT">
-				<b:NavLink ui:field="closeAllTabs">Close All Tabs
+				<b:NavLink ui:field="closeAllTabs" visible="false">Close All Tabs
 				</b:NavLink>
 			</b:Nav>
 		</b:Navbar>
diff --git a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/MainTabPanel.java b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/MainTabPanel.java
index 28957bb..777a027 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/MainTabPanel.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/client/ui/MainTabPanel.java
@@ -3,14 +3,17 @@ package org.gcube.portlets.widgets.ckancontentmoderator.client.ui;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.gcube.portlets.widgets.ckancontentmoderator.client.resources.ContentModeratorWidgetResources;
 import org.gcube.portlets.widgets.ckancontentmoderator.client.ui.util.UtilFunct;
 
+import com.github.gwtbootstrap.client.ui.Icon;
 import com.github.gwtbootstrap.client.ui.Tab;
 import com.github.gwtbootstrap.client.ui.TabPanel;
 import com.github.gwtbootstrap.client.ui.constants.IconType;
 import com.google.gwt.core.client.GWT;
 import com.google.gwt.core.client.Scheduler;
 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
+import com.google.gwt.dom.client.Style.Cursor;
 import com.google.gwt.event.dom.client.ClickEvent;
 import com.google.gwt.event.dom.client.ClickHandler;
 import com.google.gwt.event.dom.client.LoadEvent;
@@ -18,6 +21,7 @@ import com.google.gwt.event.dom.client.LoadHandler;
 import com.google.gwt.uibinder.client.UiBinder;
 import com.google.gwt.uibinder.client.UiField;
 import com.google.gwt.user.client.Element;
+import com.google.gwt.user.client.ui.AbstractImagePrototype;
 import com.google.gwt.user.client.ui.Composite;
 import com.google.gwt.user.client.ui.Widget;
 
@@ -87,6 +91,26 @@ public class MainTabPanel extends Composite {
 				public void onLoad(LoadEvent event) {
 					tab.setIcon(IconType.BOOK);
 					setNoSpinner(tab);
+					
+					Icon icon = new Icon(IconType.REMOVE);
+					icon.setTitle("Close this tab");
+					icon.getElement().getStyle().setCursor(Cursor.POINTER);
+					ClickHandler clickHandler = new ClickHandler() {
+						
+						@Override
+						public void onClick(ClickEvent event) {
+							try {
+								mainTabPanel.remove(tab);
+								results.remove(tab);
+								mainTabPanel.selectTab(results.size() - 1);
+							}catch (Exception e) {
+								//silent
+							}
+						}
+					};
+					
+					icon.addDomHandler(clickHandler, ClickEvent.getType());
+					tab.addDecorate(icon);
 				}
 			});
 		}
diff --git a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/public/content-moderator-widget.css b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/public/content-moderator-widget.css
index c0d5b9c..381028e 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/public/content-moderator-widget.css
+++ b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/public/content-moderator-widget.css
@@ -35,4 +35,6 @@
 .as_simple_link {
 	background: none !important;
 	border: none !important;
+	padding: 0 !important;
+	margin: 0 !important;
 }
\ No newline at end of file
diff --git a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/server/CkanContentModeratorServiceImpl.java b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/server/CkanContentModeratorServiceImpl.java
index c3bd140..3b20ab9 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/server/CkanContentModeratorServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckancontentmoderator/server/CkanContentModeratorServiceImpl.java
@@ -248,20 +248,42 @@ public class CkanContentModeratorServiceImpl extends RemoteServiceServlet implem
 			String scope = setContexts();
 			DataCatalogueImpl catalogueImpl = CatalogueCMSFactory.getFactory().getCatalogueImplPerScope(scope);
 			GCubeUser user = GcubeContextUtil.getCurrentUser(this.getThreadLocalRequest());
+			
+			boolean moderationCheckPassed = false;
+			
 			if (user != null) {
 				CkanDataset ckanDataset = catalogueImpl.getDataset(itemName, user.getUsername());
 				ds = null;
 				if (ckanDataset != null) {
 					ds = toPatchedCatalogueDataset(ckanDataset, catalogueImpl.getCatalogueUrl());
+					
+					Boolean userModerator = isModeratorRoleAssigned();
+					moderationCheckPassed = userModerator?true:false;
+					LOG.info("Moderation check: is the user a Moderator? "+moderationCheckPassed);
+					//The user is not a Moderator, yes otherwise
+					if(!moderationCheckPassed) {
+						String datasetAuthorMail = ds.getAuthorEmail();
+						String userMail = user.getEmail();
+						if(datasetAuthorMail!=null && userMail!=null && datasetAuthorMail.compareTo(userMail)==0) {
+							//The user is the owner of the dataset, so he/she can view the dataset (moderation check passed)
+							moderationCheckPassed = true;	
+						}
+						LOG.info("Moderation check: is the user the owner of the dataset? "+moderationCheckPassed);
+					}
 				}
 			}
+			
+			if(!moderationCheckPassed) {
+				LOG.info("Moderation ckeck not passed, returning null");
+				ds = null;
+			}
 
 		} catch (Exception e) {
 			LOG.error("Error occurred on reading item for name: " + itemName, e);
 			throw e;
 		}
 
-		LOG.info("returning: " + ds);
+		LOG.info("getItemForName "+itemName+", returning: " + ds);
 		return ds;
 	}