diff --git a/indra/newview/llnotificationhandler.h b/indra/newview/llnotificationhandler.h
index 62daf5f105..62008b91a0 100644
--- a/indra/newview/llnotificationhandler.h
+++ b/indra/newview/llnotificationhandler.h
@@ -356,6 +356,11 @@ public:
 	 */
 	static void addNotifPanelToIM(const LLNotificationPtr& notification);
 
+	/**
+	 * Updates messages of IM floater.
+	 */
+	static void updateIMFLoaterMesages(const LLUUID& session_id);
+
 	/**
 	 * Updates messages of visible IM floater.
 	 */
diff --git a/indra/newview/llnotificationhandlerutil.cpp b/indra/newview/llnotificationhandlerutil.cpp
index 5affd5c677..55e0f33121 100644
--- a/indra/newview/llnotificationhandlerutil.cpp
+++ b/indra/newview/llnotificationhandlerutil.cpp
@@ -252,6 +252,9 @@ void LLHandlerUtil::logToIM(const EInstantMessage& session_type,
 		session->mNumUnread = unread;
 		session->mParticipantUnreadMessageCount = participant_unread;
 
+		// update IM floater messages
+		updateIMFLoaterMesages(session_id);
+
 		// restore active session id
 		if (active_session_id.isNull())
 		{
@@ -414,6 +417,16 @@ void LLHandlerUtil::addNotifPanelToIM(const LLNotificationPtr& notification)
 	LLIMModel::getInstance()->mNewMsgSignal(arg);
 }
 
+// static
+void LLHandlerUtil::updateIMFLoaterMesages(const LLUUID& session_id)
+{
+	LLIMFloater* im_floater = LLIMFloater::findInstance(session_id);
+	if (im_floater != NULL && im_floater->getVisible())
+	{
+		im_floater->updateMessages();
+	}
+}
+
 // static
 void LLHandlerUtil::updateVisibleIMFLoaterMesages(const LLNotificationPtr& notification)
 {
@@ -421,11 +434,7 @@ void LLHandlerUtil::updateVisibleIMFLoaterMesages(const LLNotificationPtr& notif
 	LLUUID from_id = notification->getPayload()["from_id"];
 	LLUUID session_id = spawnIMSession(name, from_id);
 
-	LLIMFloater* im_floater = LLIMFloater::findInstance(session_id);
-	if (im_floater != NULL && im_floater->getVisible())
-	{
-		im_floater->updateMessages();
-	}
+	updateIMFLoaterMesages(session_id);
 }
 
 // static