diff --git a/ESP32-IDF_ESPNOW-Transmitter/main/joystick.h b/ESP32-IDF_ESPNOW-Transmitter/main/joystick.h
index e30abac1e..2615ea12d 100644
--- a/ESP32-IDF_ESPNOW-Transmitter/main/joystick.h
+++ b/ESP32-IDF_ESPNOW-Transmitter/main/joystick.h
@@ -1,6 +1,10 @@
 #ifndef JOYSTICK_H
 #define JOYSTICK_H
 
+extern uint8_t broadcast_mac[ESP_NOW_ETH_ALEN];//      = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};     // Broadcast MAC address
+extern uint8_t receiver_mac[ESP_NOW_ETH_ALEN];//       = {0xE4, 0xB0, 0x63, 0x17, 0x9E, 0x45};     // MAC address of Robot
+extern uint8_t transmitter_mac[ESP_NOW_ETH_ALEN];//    = {0x34, 0xB7, 0xDA, 0xF9, 0x33, 0x8D};     // MAC address of Remote Control
+
 esp_err_t joystick_adc_init(void);
 void joystick_show_raw_xy();
 void get_joystick_xy(int *x_axis, int *y_axis);