diff --git a/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c b/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
index e74a27c49..8021fcc25 100644
--- a/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
+++ b/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
@@ -31,8 +31,8 @@
 
 static const char *TAG = "i2c-simple-example";
 
-#define I2C_MASTER_SCL_IO           CONFIG_I2C_MASTER_SCL      /*!< GPIO number used for I2C master clock */
-#define I2C_MASTER_SDA_IO           CONFIG_I2C_MASTER_SDA      /*!< GPIO number used for I2C master data  */
+#define I2C_MASTER_SCL_IO           21      /*!< GPIO number used for I2C master clock */
+#define I2C_MASTER_SDA_IO           22      /*!< GPIO number used for I2C master data  */
 #define I2C_MASTER_NUM              I2C_NUM_0                          /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
 #define I2C_MASTER_FREQ_HZ          400000                     /*!< I2C master clock frequency */
 #define I2C_MASTER_TX_BUF_DISABLE   0                          /*!< I2C master doesn't need buffer */