diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index a4a28df25..82b58c8f4 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -65,8 +65,6 @@
 
 static const char *TAG = "ESP IDF Robot";
 
-#define I2C_PORT 0
-#define I2C_ADDR 0x40
 
 
 /* Use project configuration menu (idf.py menuconfig) to choose the GPIO to blink,