diff --git a/ESP-IDF_Robot/build/.ninja_lock b/ESP-IDF_Robot/build/.ninja_lock
new file mode 100644
index 000000000..e69de29bb
diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 5daf8d015..b840b088c 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -528,7 +528,7 @@ static esp_err_t espnow_init(void) {
     send_param->unicast = false;
     send_param->broadcast = true;
     send_param->state = 0;
-    send_param->magic = 55;//esp_random();   // Arbitrary number that determines which device is sender/receiver.
+    send_param->magic = esp_random();   // Arbitrary number that determines which device is sender/receiver.
     send_param->count = CONFIG_ESPNOW_SEND_COUNT;
     send_param->delay = CONFIG_ESPNOW_SEND_DELAY;
     send_param->len = CONFIG_ESPNOW_SEND_LEN;