diff --git a/examples/ADC_M5StickCPlus/ADC_M5StickCPlus.ino b/examples/ADC_M5StickCPlus/ADC_M5StickCPlus.ino
index 5a3faea..1b38dc1 100644
--- a/examples/ADC_M5StickCPlus/ADC_M5StickCPlus.ino
+++ b/examples/ADC_M5StickCPlus/ADC_M5StickCPlus.ino
@@ -22,6 +22,7 @@ ADS1100 ads;
 void setup(void) {
     M5.begin();             // Init M5StickCPlus.  初始化M5StickCPlus
     M5.Lcd.setRotation(3);  // Rotating display.  旋转显示屏
+    Wire.begin(0, 26);       // Enable I2C.  启用 I2C
 
     // The address can be changed making the option of connecting multiple
     // devices 地址可以改变，以连接多个设备
@@ -71,4 +72,4 @@ void loop(void) {
         M5.Lcd.drawString("No Found ADC sensor.", 0, 20);
     }
     delay(1000);
-}
\ No newline at end of file
+}