diff --git a/src/net/clientthread.h b/src/net/clientthread.h
index 2d1b3a4d..5a0be2d6 100644
--- a/src/net/clientthread.h
+++ b/src/net/clientthread.h
@@ -91,6 +91,7 @@ public:
 	bool GetPlayerIdFromName(const std::string &playerName, unsigned &playerId) const;
 	ServerStats GetStatData() const;
 	unsigned GetGameId() const;
+	unsigned GetGuiPlayerId() const;
 
 	Gsasl *GetAuthContext();
 
@@ -158,7 +159,6 @@ protected:
 	void SetGameData(const GameData &gameData);
 	const StartData &GetStartData() const;
 	void SetStartData(const StartData &startData);
-	unsigned GetGuiPlayerId() const;
 	void SetGuiPlayerId(unsigned guiPlayerId);
 
 	boost::shared_ptr<Game> GetGame();
@@ -259,6 +259,7 @@ private:
 
 	unsigned m_curGameNum;
 	unsigned m_guiPlayerId;
+	mutable boost::mutex m_guiPlayerIdMutex;
 	bool m_sessionEstablished;
 
 	mutable boost::mutex m_curStatsMutex;
diff --git a/src/net/common/clientthread.cpp b/src/net/common/clientthread.cpp
index 2e2c2b7d..f12d6101 100644
--- a/src/net/common/clientthread.cpp
+++ b/src/net/common/clientthread.cpp
@@ -963,12 +963,14 @@ ClientThread::SetStartData(const StartData &startData)
 unsigned
 ClientThread::GetGuiPlayerId() const
 {
+	boost::mutex::scoped_lock lock(m_guiPlayerIdMutex);
 	return m_guiPlayerId;
 }
 
 void
 ClientThread::SetGuiPlayerId(unsigned guiPlayerId)
 {
+	boost::mutex::scoped_lock lock(m_guiPlayerIdMutex);
 	m_guiPlayerId = guiPlayerId;
 }
 
diff --git a/src/session.cpp b/src/session.cpp
index 2cf778f4..1af1eb82 100755
--- a/src/session.cpp
+++ b/src/session.cpp
@@ -490,6 +490,14 @@ unsigned Session::getClientCurrentGameId() const
 	return id;
 }
 
+unsigned Session::getClientUniquePlayerId() const
+{
+	unsigned id = 0;
+	if (myNetClient)
+		id = myNetClient->GetGuiPlayerId();
+	return id;
+}
+
 bool Session::getAvatarFile(const MD5Buf &avatarMD5, std::string &fileName)
 {
 	bool retVal = false;
diff --git a/src/session.h b/src/session.h
index 30d654dc..4f6ee5dd 100755
--- a/src/session.h
+++ b/src/session.h
@@ -96,6 +96,7 @@ public:
 	PlayerInfo getClientPlayerInfo(unsigned playerId) const;
 	ServerStats getClientStats() const;
 	unsigned getClientCurrentGameId() const;
+	unsigned getClientUniquePlayerId() const;
 
 	bool getAvatarFile(const MD5Buf &avatarMD5, std::string &fileName);