diff --git a/MQTTSNGateway/GatewayTester/README.md b/MQTTSNGateway/GatewayTester/README.md
index a0f4bad..06c11b9 100644
--- a/MQTTSNGateway/GatewayTester/README.md
+++ b/MQTTSNGateway/GatewayTester/README.md
@@ -57,7 +57,7 @@ TEST_LIST = {// e.g. TEST( Label, Test),
 ## step1. Define a sensor network 
 
 **UDP** or **Bluetooth** is available as a sensor network.
-Uncomment a line \#define UDP or BLE in LMqttsnClientApp.h file. 
+Uncomment a line \#define UDP or RFCOMM in LMqttsnClientApp.h file. 
 ```
 
 /*======================================
@@ -65,7 +65,7 @@ Uncomment a line \#define UDP or BLE in LMqttsnClientApp.h file.
  ======================================*/
 //#define CLIENT_MODE
 #define UDP
-//#define BLE
+//#define RFCOMM
 ```
 
 ## step2. Build    
diff --git a/MQTTSNGateway/src/linux/Threading.h b/MQTTSNGateway/src/linux/Threading.h
index 92b9270..677e7ee 100644
--- a/MQTTSNGateway/src/linux/Threading.h
+++ b/MQTTSNGateway/src/linux/Threading.h
@@ -95,7 +95,7 @@ private:
 class RingBuffer
 {
 public:
-    RingBuffer(const char* keyDirctory = MQTTSNGW_KEY_DIRECTORY);
+    RingBuffer(const char* keyDirectory = MQTTSNGW_KEY_DIRECTORY);
 	~RingBuffer();
 	void put(char* buffer);
 	int get(char* buffer, int bufferLength);