diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/PanelTogglePermission.java b/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/PanelTogglePermission.java
index 72d42b1..5e9f405 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/PanelTogglePermission.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/PanelTogglePermission.java
@@ -59,6 +59,7 @@ public class PanelTogglePermission extends LayoutContainer {
 		final ToggleButton bToggle = new ToggleButton(acl.getLabel());
 		bToggle.setScale(ButtonScale.MEDIUM);
 		bToggle.setId(acl.getId());
+		bToggle.setAllowDepress(false);
 		bToggle.toggle(acl.getDefaultValue());
 		bToggle.setIconAlign(IconAlign.TOP);
 		bToggle.addSelectionListener(new SelectionListener<ButtonEvent>() {
diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/view/tree/AsyncTreePanel.java b/src/main/java/org/gcube/portlets/user/workspace/client/view/tree/AsyncTreePanel.java
index ea58f5f..5fd0d99 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/view/tree/AsyncTreePanel.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/view/tree/AsyncTreePanel.java
@@ -318,6 +318,12 @@ public class AsyncTreePanel extends LayoutContainer {
 					return;
 				}
 				
+				if(sel.isVreFolder()){
+					event.setCancelled(true);
+					event.getStatus().setStatus(false);
+					return;
+				}
+				
 				if(sel != null && sel.getName()!= null)
 					System.out.println("Start drag of " + sel.getName());