diff --git a/src/main/java/org/gcube/portlets/user/shareupdates/server/ShareUpdateServiceImpl.java b/src/main/java/org/gcube/portlets/user/shareupdates/server/ShareUpdateServiceImpl.java
index c9f72b8..2e80b1b 100644
--- a/src/main/java/org/gcube/portlets/user/shareupdates/server/ShareUpdateServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/shareupdates/server/ShareUpdateServiceImpl.java
@@ -260,7 +260,7 @@ public class ShareUpdateServiceImpl extends RemoteServiceServlet implements	Shar
 			for (ItemBean u : mentionedUsers) {
 				toPass.add(new GenericItemBean(u.getId(), u.getName(), u.getAlternativeName(), u.getThumbnailURL()));
 			}			
-			Thread thread = new Thread(new MentionNotificationsThread(toShare.getKey(), escapedFeedText, nm, toPass));
+			Thread thread = new Thread(new MentionNotificationsThread(toShare.getKey(), escapedFeedText, nm, null, toPass));
 			thread.start();
 		}
 
@@ -463,7 +463,7 @@ public class ShareUpdateServiceImpl extends RemoteServiceServlet implements	Shar
 			for (ItemBean u : mentionedUsers) {
 				toPass.add(new GenericItemBean(u.getId(), u.getName(), u.getAlternativeName(), u.getThumbnailURL()));
 			}			
-			Thread thread = new Thread(new MentionNotificationsThread(toShare.getKey(), textToPost, nm, toPass));
+			Thread thread = new Thread(new MentionNotificationsThread(toShare.getKey(), textToPost, nm, null, toPass));
 			thread.start();
 		}