diff --git a/indra/newview/llfloaternotificationstabbed.cpp b/indra/newview/llfloaternotificationstabbed.cpp
index e48fd8d7f5f5face558ac415e6e4ffc895c39193..0df62917542aac44b8a4c4c2f4cc932b0fe6c4d6 100644
--- a/indra/newview/llfloaternotificationstabbed.cpp
+++ b/indra/newview/llfloaternotificationstabbed.cpp
@@ -120,7 +120,7 @@ LLFloaterNotificationsTabbed::~LLFloaterNotificationsTabbed()
 }
 
 //---------------------------------------------------------------------------------
-void LLFloaterNotificationsTabbed::removeItemByID(const LLUUID& id, std::string type)
+void LLFloaterNotificationsTabbed::removeItemByID(const LLUUID& id, const std::string& type)
 {
     if(mNotificationsSeparator->removeItemByID(type, id))
     {
@@ -145,7 +145,7 @@ void LLFloaterNotificationsTabbed::removeItemByID(const LLUUID& id, std::string
 }
 
 //---------------------------------------------------------------------------------
-LLPanel * LLFloaterNotificationsTabbed::findItemByID(const LLUUID& id, std::string type)
+LLPanel * LLFloaterNotificationsTabbed::findItemByID(const LLUUID& id, const std::string& type)
 {
     return mNotificationsSeparator->findItemByID(type, id);
 }
@@ -265,7 +265,7 @@ void LLFloaterNotificationsTabbed::updateNotificationCounters()
 }
 
 //---------------------------------------------------------------------------------
-void LLFloaterNotificationsTabbed::addItem(LLNotificationListItem::Params p)
+void LLFloaterNotificationsTabbed::addItem(const LLNotificationListItem::Params& p)
 {
     // do not add clones
     if (mNotificationsSeparator->findItemByID(p.notification_name, p.notification_id))
@@ -490,7 +490,7 @@ bool LLNotificationSeparator::addItem(std::string& tag, LLNotificationListItem*
 }
 
 //---------------------------------------------------------------------------------
-bool LLNotificationSeparator::removeItemByID(std::string& tag, const LLUUID& id)
+bool LLNotificationSeparator::removeItemByID(const std::string& tag, const LLUUID& id)
 {
     notification_list_map_t::iterator it = mNotificationListMap.find(tag);
     if (it != mNotificationListMap.end())
@@ -521,7 +521,7 @@ U32 LLNotificationSeparator::size() const
 }
 
 //---------------------------------------------------------------------------------
-LLPanel* LLNotificationSeparator::findItemByID(std::string& tag, const LLUUID& id)
+LLPanel* LLNotificationSeparator::findItemByID(const std::string& tag, const LLUUID& id)
 {
     notification_list_map_t::iterator it = mNotificationListMap.find(tag);
     if (it != mNotificationListMap.end())
diff --git a/indra/newview/llfloaternotificationstabbed.h b/indra/newview/llfloaternotificationstabbed.h
index c0ad0949456185b66661f5d1c739c9854b331152..e3d6cfa74a6b7b103a95a96e498f81eef922da64 100644
--- a/indra/newview/llfloaternotificationstabbed.h
+++ b/indra/newview/llfloaternotificationstabbed.h
@@ -51,8 +51,8 @@ class LLNotificationSeparator
     void initTaggedList(const std::set<std::string>& tags, LLNotificationListView* list);
     void initUnTaggedList(LLNotificationListView* list);
     bool addItem(std::string& tag, LLNotificationListItem* item);
-    LLPanel* findItemByID(std::string& tag, const LLUUID& id);
-    bool removeItemByID(std::string& tag, const LLUUID& id);
+    LLPanel* findItemByID(const std::string& tag, const LLUUID& id);
+    bool removeItemByID(const std::string& tag, const LLUUID& id);
     void getItems(std::vector<LLNotificationListItem*>& items) const;
     U32 size() const;
 private:
@@ -79,8 +79,8 @@ class LLFloaterNotificationsTabbed : public LLTransientDockableFloater
     bool isWindowEmpty();
 
     // Operating with items
-    void removeItemByID(const LLUUID& id, std::string type);
-    LLPanel * findItemByID(const LLUUID& id, std::string type);
+    void removeItemByID(const LLUUID& id, const std::string& type);
+    LLPanel * findItemByID(const LLUUID& id, const std::string& type);
     void updateNotificationCounters();
     void updateNotificationCounter(S32 panelIndex, S32 counterValue, std::string stringName);
 
@@ -142,7 +142,7 @@ class LLFloaterNotificationsTabbed : public LLTransientDockableFloater
     // void initChannel();
     void clearScreenChannels();
     // Operating with items
-    void addItem(LLNotificationListItem::Params p);
+    void addItem(const LLNotificationListItem::Params& p);
     void getAllItemsOnCurrentTab(std::vector<LLPanel*>& items) const;
 
     // Closes all notifications and removes them from the Notification Well