diff --git a/tasmota/xdrv_52_3_berry_gpio.ino b/tasmota/xdrv_52_3_berry_gpio.ino
index 62a41db41..9672724dc 100644
--- a/tasmota/xdrv_52_3_berry_gpio.ino
+++ b/tasmota/xdrv_52_3_berry_gpio.ino
@@ -50,7 +50,7 @@ extern "C" {
             // DAC
 #if   defined(CONFIG_IDF_TARGET_ESP32)
             if (25 == pin || 26 == pin) {
-              uint32_t channel = pin - 25;    // 1 or 2
+              uint32_t channel = pin - 25 + 1;    // 1 or 2
               esp_err_t err = dac_output_enable((dac_channel_t) channel);
               if (err) {
                 be_raisef(vm, "value_error", "Error: dac_output_enable(%i) -> %i", channel, err);
@@ -60,7 +60,7 @@ extern "C" {
             }
 #elif defined(CONFIG_IDF_TARGET_ESP32S2)
             if (17 == pin || 18 == pin) {
-              uint32_t channel = pin - 17;    // 1 or 2
+              uint32_t channel = pin - 17 + 1;    // 1 or 2
               esp_err_t err = dac_output_enable((dac_channel_t) channel);
               if (err) {
                 be_raisef(vm, "value_error", "Error: dac_output_enable(%i) -> %i", channel, err);
@@ -121,7 +121,7 @@ extern "C" {
       uint32_t dac_value = changeUIntScale(mV, 0, 3300, 0, 255);    // convert from 0..3300 ms to 0..255
 #if   defined(CONFIG_IDF_TARGET_ESP32)
       if (25 == pin || 26 == pin) {
-        uint32_t channel = pin - 25;    // 1 or 2
+        uint32_t channel = pin - 25 + 1;    // 1 or 2
         esp_err_t err = dac_output_voltage((dac_channel_t) channel, dac_value);
         if (err) {
           be_raisef(vm, "internal_error", "Error: esp_err_tdac_output_voltage(%i, %i) -> %i", channel, dac_value, err);
@@ -131,7 +131,7 @@ extern "C" {
       }
 #elif defined(CONFIG_IDF_TARGET_ESP32S2)
       if (17 == pin || 18 == pin) {
-        uint32_t channel = pin - 17;    // 1 or 2
+        uint32_t channel = pin - 17 + 1;    // 1 or 2
         esp_err_t err = dac_output_voltage((dac_channel_t) channel, dac_value);
         if (err) {
           be_raisef(vm, "internal_error", "Error: esp_err_tdac_output_voltage(%i, %i) -> %i", channel, dac_value, err);