diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java b/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java
index 5d81d7f..8bf832f 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java
@@ -2743,8 +2743,9 @@ public class AppControllerExplorer implements EventHandler, TreeAppControllerInt
 				final List<InfoContactModel> targets = multiDragContactAdmin.getTargetContacts();
 
 				if (targets.size() == 1) {
-					MessageBoxConfirm info = new MessageBoxConfirm("Any Administrator/s?",
-							"You have not selected any Administrator, confirm only you as Administrator and exit?");
+					MessageBoxConfirm info = new MessageBoxConfirm("Attention",
+							"Attention the owner is already Administrator. You have not selected further administrators."
+							+ " Confirm and exit?");
 
 					info.getMessageBoxConfirm().addCallback(new Listener<MessageBoxEvent>() {
 
@@ -2770,11 +2771,11 @@ public class AppControllerExplorer implements EventHandler, TreeAppControllerInt
 						names += "<li><i>" + infoContactModel.getName() + ";</i></li>";
 					}
 
-					String tail = "</ul>as new ";
+					String tail = "</ul>as ";
 					tail += logins.size() > 1 ? "administrators" : "administrator";
 					tail += ", confirm?";
-					MessageBoxConfirm confirm = new MessageBoxConfirm("Setting new Administrator/s?",
-							"You have selected: <br/>" + names + tail);
+					MessageBoxConfirm confirm = new MessageBoxConfirm("Attention",
+							"The owner and the current user are administrators. Selected: <br/>" + names + tail);
 
 					confirm.getMessageBoxConfirm().addCallback(new Listener<MessageBoxEvent>() {