diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index ad8a463d1..66afa2213 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -180,7 +180,7 @@ static void ledc_init (void) {
 
 static void dac_init (void) {
     // GPIO ??
-    dac_output_enable(DAC_CHAN_2);
+    dac_output_enable(DAC_CHANNEL_0);
     dac_output_voltage(DAC_CHANNEL_2, 64);
 }