diff --git a/TC1/TC1.mk b/TC1/TC1.mk
index 40e5d3a..f375f86 100644
--- a/TC1/TC1.mk
+++ b/TC1/TC1.mk
@@ -25,7 +25,7 @@
 NAME := App_TC1
 
 $(NAME)_SOURCES := main.c\
-				   cJSON/cJSON.c\
+				   c_json/c_json.c\
 				   ota_server/ota_server.c\
 				   user_wifi.c\
 				   user_gpio.c\
diff --git a/TC1/cJSON/cJSON.c b/TC1/c_json/c_json.c
similarity index 99%
rename from TC1/cJSON/cJSON.c
rename to TC1/c_json/c_json.c
index fad99cb..39281f5 100644
--- a/TC1/cJSON/cJSON.c
+++ b/TC1/c_json/c_json.c
@@ -30,7 +30,7 @@
 #include <float.h>
 #include <limits.h>
 #include <ctype.h>
-#include "cJSON.h"
+#include "c_json.h"
 #include "mico.h"
 static const char *ep;
 
diff --git a/TC1/cJSON/cJSON.h b/TC1/c_json/c_json.h
similarity index 100%
rename from TC1/cJSON/cJSON.h
rename to TC1/c_json/c_json.h
diff --git a/TC1/mqtt_server/user_function.c b/TC1/mqtt_server/user_function.c
index 1c531c9..642cb72 100644
--- a/TC1/mqtt_server/user_function.c
+++ b/TC1/mqtt_server/user_function.c
@@ -4,7 +4,7 @@
 
 #include "main.h"
 #include "user_gpio.h"
-#include "cJSON/cJSON.h"
+#include "c_json/c_json.h"
 #include "ota_server/user_ota.h"
 #include "user_mqtt_client.h"
 #include "user_udp.h"
diff --git a/TC1/mqtt_server/user_mqtt_client.c b/TC1/mqtt_server/user_mqtt_client.c
index b0d5ecf..8294fc9 100644
--- a/TC1/mqtt_server/user_mqtt_client.c
+++ b/TC1/mqtt_server/user_mqtt_client.c
@@ -27,7 +27,7 @@
 #include "user_function.h"
 #include "user_gpio.h"
 #include "user_mqtt_client.h"
-#include "cJSON/cJSON.h"
+#include "c_json/c_json.h"
 
 //#define MQTT_CLIENT_SSL_ENABLE  // ssl
 
diff --git a/TC1/time_server/user_rtc.c b/TC1/time_server/user_rtc.c
index 76b72fa..fc2b0aa 100644
--- a/TC1/time_server/user_rtc.c
+++ b/TC1/time_server/user_rtc.c
@@ -4,7 +4,7 @@
 #include "user_gpio.h"
 #include "sntp.h"
 #include "time_server/user_sntp.h"
-#include "cJSON/cJSON.h"
+#include "c_json/c_json.h"
 #include "mqtt_server/user_mqtt_client.h"
 #include "mqtt_server/user_function.h"
 
diff --git a/TC1/user_gpio.c b/TC1/user_gpio.c
index 5ddd9cf..5484db6 100644
--- a/TC1/user_gpio.c
+++ b/TC1/user_gpio.c
@@ -4,7 +4,7 @@
 #include "user_gpio.h"
 #include "mqtt_server/user_mqtt_client.h"
 #include "user_udp.h"
-#include "cJSON/cJSON.h"
+#include "c_json/c_json.h"
 
 mico_gpio_t relay[Relay_NUM] = { Relay_0, Relay_1, Relay_2, Relay_3, Relay_4, Relay_5 };