diff --git a/src/chat/chat-room/client-group-chat-room-p.h b/src/chat/chat-room/client-group-chat-room-p.h
index 39b8313b3fefe112132c70fb65831ea309cefa33..72ffd2206fff9682a98b0e9e9a26e80066c221fe 100644
--- a/src/chat/chat-room/client-group-chat-room-p.h
+++ b/src/chat/chat-room/client-group-chat-room-p.h
@@ -33,7 +33,7 @@ public:
 
 	std::list<Address> cleanAddressesList (const std::list<Address> &addresses) const;
 	std::shared_ptr<CallSession> createSession ();
-	void notifyReceived (std::string body);
+	void notifyReceived (const std::string &body);
 
 private:
 	L_DECLARE_PUBLIC(ClientGroupChatRoom);
diff --git a/src/chat/chat-room/client-group-chat-room.cpp b/src/chat/chat-room/client-group-chat-room.cpp
index 662a7b36e353f05ef4b8c85962595862dcd84ac0..2c801a1778568cdf4b1df1c7e8459ef7ef06e032 100644
--- a/src/chat/chat-room/client-group-chat-room.cpp
+++ b/src/chat/chat-room/client-group-chat-room.cpp
@@ -69,7 +69,7 @@ shared_ptr<CallSession> ClientGroupChatRoomPrivate::createSession () {
 	return session;
 }
 
-void ClientGroupChatRoomPrivate::notifyReceived (string body) {
+void ClientGroupChatRoomPrivate::notifyReceived (const string &body) {
 	L_Q_T(RemoteConference, qConference);
 	qConference->getPrivate()->eventHandler->notifyReceived(body);
 }
@@ -79,11 +79,11 @@ void ClientGroupChatRoomPrivate::notifyReceived (string body) {
 ClientGroupChatRoom::ClientGroupChatRoom (
 	const std::shared_ptr<Core> &core,
 	const Address &me,
-	const std::string &uri,
+	const std::string &factoryUri,
 	const std::string &subject
 ) : ChatRoom(*new ClientGroupChatRoomPrivate, core, Address()), RemoteConference(core->getCCore(), me, nullptr) {
 	L_D_T(RemoteConference, dConference);
-	dConference->focus = make_shared<Participant>(Address(uri));
+	dConference->focus = make_shared<Participant>(Address(factoryUri));
 	RemoteConference::setSubject(subject);
 }
 
diff --git a/src/chat/chat-room/client-group-chat-room.h b/src/chat/chat-room/client-group-chat-room.h
index 8b4ae10c09176c231256c1b8c193fe3effa987fe..7096841673b5e75bbca5b67ebd251a2e7543f6ca 100644
--- a/src/chat/chat-room/client-group-chat-room.h
+++ b/src/chat/chat-room/client-group-chat-room.h
@@ -35,7 +35,7 @@ public:
 	ClientGroupChatRoom (
 		const std::shared_ptr<Core> &core,
 		const Address &me,
-		const std::string &uri,
+		const std::string &factoryUri,
 		const std::string &subject
 	);