diff --git a/src/main/java/org/gcube/portlets/widgets/workspacesharingwidget/server/WorkspaceSharingServiceImpl.java b/src/main/java/org/gcube/portlets/widgets/workspacesharingwidget/server/WorkspaceSharingServiceImpl.java
index 4aa836a..33b5572 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspacesharingwidget/server/WorkspaceSharingServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspacesharingwidget/server/WorkspaceSharingServiceImpl.java
@@ -429,7 +429,13 @@ public class WorkspaceSharingServiceImpl extends RemoteServiceServlet implements
 		}
 	}
 	
-
+	/**
+	 * 
+	 * @param folderId
+	 * @param listLogins
+	 * @param aclType
+	 * @throws Exception
+	 */
 	public void setACLs(String folderId, List<String> listLogins, String aclType) throws Exception{
 		try {
 
@@ -444,14 +450,25 @@ public class WorkspaceSharingServiceImpl extends RemoteServiceServlet implements
 				
 			Workspace workspace = getWorkspace();
 			WorkspaceItem wsItem = workspace.getItem(folderId);
-			
-			if(wsItem.isShared() && (wsItem.getType().equals(WorkspaceItemType.SHARED_FOLDER))){
-				WorkspaceSharedFolder ite = (WorkspaceSharedFolder) workspace.getItemByPath(wsItem.getPath());
+
+			//IS A WORKSPACE FOLDER?
+			if(wsItem!= null && wsItem.isFolder() && wsItem.isShared()){
+				WorkspaceFolder ite;
+				if(wsItem.getType().equals(WorkspaceItemType.SHARED_FOLDER)){ 
+					//IS ROOT SHARED FOLDER
+					ite = (WorkspaceSharedFolder) wsItem;
+					logger.trace("Folder " +ite.getName()+" is a "+WorkspaceSharedFolder.class.getName());
+				}else{ 
+					// IS SUB FOLDER OF THE SHARING	
+					ite = (WorkspaceFolder) wsItem;
+					logger.trace("Folder " +ite.getName()+" is a "+WorkspaceFolder.class.getName());
+				}
+				
 				ite.setACL(listLogins, ACLType.valueOf(aclType));
 			}else
 				throw new Exception("Source item is not shared or shared folder");
 			
-			logger.info("Setting ACL completed, retuning");
+			logger.info("Setting ACL for "+wsItem.getName()+" completed, returning");
 		} catch (Exception e) {
 			logger.info("Error in set ACLs", e);
 			String error = ConstantsSharing.SERVER_ERROR +" setting permissions. "+e.getMessage();