diff --git a/source/glest_game/network/connection_slot.cpp b/source/glest_game/network/connection_slot.cpp
index fd6a8fe6d..3a05087e7 100644
--- a/source/glest_game/network/connection_slot.cpp
+++ b/source/glest_game/network/connection_slot.cpp
@@ -806,10 +806,15 @@ void ConnectionSlot::close() {
 
 	if(SystemFlags::getSystemSettingType(SystemFlags::debugNetwork).enabled) SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
+	static string mutexOwnerId = string(__FILE__) + string("_") + intToStr(__LINE__);
+	MutexSafeWrapper safeMutex(&mutexCloseConnection,mutexOwnerId);
+
 	bool updateServerListener = (socket != NULL);
 	delete socket;
 	socket= NULL;
 
+	safeMutex.ReleaseLock();
+
 	if(SystemFlags::getSystemSettingType(SystemFlags::debugNetwork).enabled) SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s LINE: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
     if(updateServerListener == true && ready == false) {
diff --git a/source/glest_game/network/connection_slot.h b/source/glest_game/network/connection_slot.h
index 96abc2ca2..ef520af9b 100644
--- a/source/glest_game/network/connection_slot.h
+++ b/source/glest_game/network/connection_slot.h
@@ -112,6 +112,8 @@ private:
 	time_t connectedTime;
 	bool gotIntro;
 
+	Mutex mutexCloseConnection;
+
 	Mutex mutexPendingNetworkCommandList;
 	vector<NetworkCommand> vctPendingNetworkCommandList;
 	ConnectionSlotThread* slotThreadWorker;