diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/view/toolbars/GxtToolBarItemAccounting.java b/src/main/java/org/gcube/portlets/user/workspace/client/view/toolbars/GxtToolBarItemAccounting.java
index b285671..4b1fba3 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/view/toolbars/GxtToolBarItemAccounting.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/view/toolbars/GxtToolBarItemAccounting.java
@@ -19,6 +19,14 @@ import com.extjs.gxt.ui.client.widget.toolbar.ToolBar;
  */
 public class GxtToolBarItemAccounting extends ToolBar{
 	
+	/**
+	 * 
+	 */
+	protected static final String READ = "Read";
+	/**
+	 * 
+	 */
+	protected static final String HISTORY = "History";
 	private TextField<String> txfName = new TextField<String>();
 	private Text txtOwner = new Text("Empty");
 	private Text txtCreationTime = new Text("Empty");
@@ -34,7 +42,7 @@ public class GxtToolBarItemAccounting extends ToolBar{
 	
 	private void initToolbar(){
 		
-		bHistory = new Button("History");
+		bHistory = new Button(HISTORY);
 		bHistory.setIcon(Resources.getIconHistory());
 		
 		bHistory.addSelectionListener(new SelectionListener<ButtonEvent>() {
@@ -47,7 +55,7 @@ public class GxtToolBarItemAccounting extends ToolBar{
 			}
 		});
 
-		bRead = new Button("Read");
+		bRead = new Button(READ);
 		bRead.setIcon(Resources.getIconNotRead());
 		
 		bRead.addSelectionListener(new SelectionListener<ButtonEvent>() {