diff --git a/retroshare-gui/src/gui/chat/ChatLobbyDialog.cpp b/retroshare-gui/src/gui/chat/ChatLobbyDialog.cpp
index 3ff6fb53b..d2fcc4a20 100644
--- a/retroshare-gui/src/gui/chat/ChatLobbyDialog.cpp
+++ b/retroshare-gui/src/gui/chat/ChatLobbyDialog.cpp
@@ -81,10 +81,25 @@ ChatLobbyDialog::ChatLobbyDialog(const ChatLobbyId& lid, QWidget *parent, Qt::Wi
     muteAct = new QAction(QIcon(), tr("Mute participant"), this);
     distantChatAct = new QAction(QIcon(":/images/chat_24.png"), tr("Start private chat"), this);
     sendMessageAct = new QAction(QIcon(":/images/mail_new.png"), tr("Send Message"), this);
+    
+    QActionGroup *sortgrp = new QActionGroup(this);
+    actionSortByName = new QAction(QIcon(), tr("Sort by Name"), this);
+    actionSortByName->setCheckable(true);
+    actionSortByName->setChecked(true); 
+    actionSortByName->setActionGroup(sortgrp);
+
+    actionSortByActivity = new QAction(QIcon(), tr("Sort by Activity"), this);
+    actionSortByActivity->setCheckable(true);
+    actionSortByActivity->setChecked(false); 
+    actionSortByActivity->setActionGroup(sortgrp);
+
 
     connect(muteAct, SIGNAL(triggered()), this, SLOT(changePartipationState()));
     connect(distantChatAct, SIGNAL(triggered()), this, SLOT(distantChatParticipant()));
     connect(sendMessageAct, SIGNAL(triggered()), this, SLOT(sendMessage()));
+    
+    connect(actionSortByName, SIGNAL(triggered()), this, SLOT(sortParcipants()));
+    connect(actionSortByActivity, SIGNAL(triggered()), this, SLOT(sortParcipants()));
 
 	// Add a button to invite friends.
 	//
@@ -181,6 +196,9 @@ void ChatLobbyDialog::participantsTreeWidgetCustomPopupMenu(QPoint)
     contextMnu.addAction(sendMessageAct);
     contextMnu.addSeparator();
     contextMnu.addAction(muteAct);
+    contextMnu.addSeparator();
+    contextMnu.addAction(actionSortByActivity);
+    contextMnu.addAction(actionSortByName);
 
 
 	muteAct->setCheckable(true);
@@ -477,7 +495,7 @@ void ChatLobbyDialog::updateParticipantsList()
         }
     }
     ui.participantsList->setSortingEnabled(true);
-    ui.participantsList->sortItems(COLUMN_ACTIVITY, Qt::DescendingOrder);
+    sortParcipants();
 }
 
 /**
@@ -767,3 +785,14 @@ void ChatLobbyDialog::showDialog(uint chatflags)
 		dynamic_cast<ChatLobbyWidget*>(MainWindow::getPage(MainWindow::ChatLobby))->setCurrentChatPage(this) ;
 	}
 }
+
+void ChatLobbyDialog::sortParcipants()
+{
+
+	if (actionSortByActivity->isChecked()) {
+        ui.participantsList->sortItems(COLUMN_ACTIVITY, Qt::DescendingOrder);
+	} else if (actionSortByName->isChecked()) {
+        ui.participantsList->sortItems(COLUMN_NAME, Qt::AscendingOrder);
+	}
+  
+}
diff --git a/retroshare-gui/src/gui/chat/ChatLobbyDialog.h b/retroshare-gui/src/gui/chat/ChatLobbyDialog.h
index a11a1d73b..3ab5c8a68 100644
--- a/retroshare-gui/src/gui/chat/ChatLobbyDialog.h
+++ b/retroshare-gui/src/gui/chat/ChatLobbyDialog.h
@@ -47,6 +47,7 @@ public:
     void setIdentity(const RsGxsId& gxs_id);
     bool isParticipantMuted(const RsGxsId &participant);
 	ChatLobbyId id() const { return lobbyId ;}
+	void sortParcipants();
 
 private slots:
 	void participantsTreeWidgetCustomPopupMenu( QPoint point );
@@ -104,6 +105,8 @@ private:
 
     QAction *muteAct;
     QAction *distantChatAct;
+    QAction *actionSortByName;
+    QAction *actionSortByActivity;
     QWidgetAction *checkableAction;
     QAction *sendMessageAct;