diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 5ae564f81..910a29f8b 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -15,6 +15,7 @@
 #include "freertos/queue.h"
 #include "driver/gpio.h"
 #include "driver/ledc.h"
+#include "driver/dac.h"
 //#include "driver/mcpwm.h"
 #include "esp_log.h"
 #include "led_strip.h"