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 d53eba1..e8d1fb3 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
@@ -1762,15 +1762,26 @@ public class WorkspaceSharingServiceImpl extends RemoteServiceServlet implements
 							break;
 
 						}
-						
+
 						if (selectedAccessType == null) {
 							throw new Exception("ACLType parameter is invalid");
 						}
 
 						List<ACL> acls = folderContainer.getAcls();
+						boolean isAdmin;
 						for (ACL acl : acls) {
 							if (acl.getPricipal().compareTo(currentUser) != 0) {
-								folderContainer = folderContainer.changeAcls(acl.getPricipal(), selectedAccessType);
+								isAdmin = false;
+								for (AccessType accessType : acl.getAccessTypes()) {
+									if (accessType.compareTo(AccessType.ADMINISTRATOR) == 0) {
+										isAdmin = true;
+										break;
+									}
+								}
+
+								if (!isAdmin) {
+									folderContainer = folderContainer.changeAcls(acl.getPricipal(), selectedAccessType);
+								}
 							}
 						}