diff --git a/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java b/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java
index baecc71..d18e236 100644
--- a/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java
+++ b/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java
@@ -2,6 +2,7 @@ package org.gcube.data.access.storagehub.services;
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
@@ -32,6 +33,7 @@ import org.apache.jackrabbit.api.security.user.Query;
 import org.apache.jackrabbit.api.security.user.QueryBuilder;
 import org.apache.jackrabbit.api.security.user.User;
 import org.apache.jackrabbit.core.security.principal.PrincipalImpl;
+import org.apache.poi.hpsf.Array;
 import org.gcube.common.authorization.control.annotations.AuthorizationControl;
 import org.gcube.common.gxrest.response.outbound.GXOutboundErrorResponse;
 import org.gcube.common.storagehub.model.Excludes;
@@ -84,10 +86,11 @@ public class UserManager {
 		InnerMethodName.instance.set("getUsers");
 
 		JackrabbitSession session = null;
-		List<String> users= new ArrayList<>();
+		List<String> users = null;
 		try {
 			session = (JackrabbitSession) repository.getRepository().login(CredentialHandler.getAdminCredentials(context));
 
+			
 			Iterator<Authorizable> result = session.getUserManager().findAuthorizables(new Query() {
 
 				@Override
@@ -95,12 +98,20 @@ public class UserManager {
 					builder.setSelector(User.class);
 				}
 			});
-
+			
+			Set<String> usersSet= new HashSet<>();
+			String adminUser = context.getInitParameter(Constants.ADMIN_PARAM_NAME);
+			
 			while (result.hasNext()) {
 				Authorizable user = result.next();
 				log.debug("user {} found",user.getPrincipal().getName());
-				users.add(user.getPrincipal().getName());
+				if (user.getPrincipal().getName().equals(adminUser)) continue;
+				usersSet.add(user.getPrincipal().getName());
 			}
+			
+			users = new ArrayList<>(usersSet);
+			Collections.sort(users);
+			
 		}catch(Exception e) {
 			log.error("jcr error getting users", e);
 			GXOutboundErrorResponse.throwException(new BackendGenericError(e));
@@ -159,6 +170,7 @@ public class UserManager {
 			org.apache.jackrabbit.api.security.user.UserManager usrManager = session.getUserManager();
 
 			User createdUser = usrManager.createUser(user, password);
+			
 			userId = createdUser.getID();
 
 			Node homeNode = session.getNode("/Home");
diff --git a/src/main/webapp/WEB-INF/README b/src/main/webapp/WEB-INF/README
index fd3d504..705dedc 100644
--- a/src/main/webapp/WEB-INF/README
+++ b/src/main/webapp/WEB-INF/README
@@ -25,7 +25,7 @@ The projects leading to this software have received funding from a series of
 Version
 --------------------------------------------------
  
-1.2.5-SNAPSHOT (20210311-193254)
+1.2.5-SNAPSHOT (20210315-104913)
  
 Please see the file named "changelog.xml" in this directory for the release notes.