diff --git a/src/main/java/org/gcube/portal/event/publisher/lr62/PortalEvent.java b/src/main/java/org/gcube/portal/event/publisher/lr62/PortalEvent.java
index 6306164..b5423b1 100644
--- a/src/main/java/org/gcube/portal/event/publisher/lr62/PortalEvent.java
+++ b/src/main/java/org/gcube/portal/event/publisher/lr62/PortalEvent.java
@@ -18,7 +18,7 @@ public class PortalEvent extends Event {
 
     protected static final Log log = LogFactoryUtil.getLog(PortalEvent.class);
 
-    private static String sender;
+    private static String rootVOName;
 
     public static final String TYPE = "portal";
     public static final String GROUP_ENTRY = "group";
@@ -26,20 +26,20 @@ public class PortalEvent extends Event {
 
     static {
         try {
-            sender = new LiferayGroupManager().getRootVOName();
+            rootVOName = new LiferayGroupManager().getRootVOName();
         } catch (Exception e) {
             log.warn("Cannot get root VO name, using hostname");
             try {
-                sender = InetAddress.getLocalHost().getHostName();
+                rootVOName = InetAddress.getLocalHost().getHostName();
             } catch (UnknownHostException e1) {
                 log.error("Cannot get localhost name", e);
-                sender = PortalUtil.getComputerName();
+                rootVOName = PortalUtil.getComputerName();
             }
         }
     }
 
     public PortalEvent(String name) {
-        super(name, TYPE, getSender());
+        super(name, TYPE, getRootVOName());
     }
 
     public PortalEvent(String name, User user) {
@@ -47,7 +47,7 @@ public class PortalEvent extends Event {
     }
 
     public PortalEvent(String name, String user) {
-        super(name, TYPE, getSender(), user);
+        super(name, TYPE, getRootVOName(), user);
     }
 
     public PortalEvent(String name, User user, Map<String, String> data) {
@@ -55,11 +55,11 @@ public class PortalEvent extends Event {
     }
 
     public PortalEvent(String name, String user, Map<String, String> data) {
-        super(name, TYPE, getSender(), user, data);
+        super(name, TYPE, getRootVOName(), user, data);
     }
 
-    protected static String getSender() {
-        return sender;
+    protected static String getRootVOName() {
+        return rootVOName;
     }
 
     public void setUser(User user) {