diff --git a/examples/Unit/RFID_RC522/RFID_RC522.ino b/examples/Unit/RFID_RC522/RFID_RC522.ino
index 2790768f..868aafb0 100644
--- a/examples/Unit/RFID_RC522/RFID_RC522.ino
+++ b/examples/Unit/RFID_RC522/RFID_RC522.ino
@@ -23,7 +23,7 @@ MFRC522 mfrc522(0x28);  // Create MFRC522 instance.  创建MFRC522实例
 void setup() {
     M5.begin();             // Init M5Stack.  初始化M5Stack
     M5.Power.begin();       // Init power  初始化电源模块
-    M5.lcd.setTextSize(2);  // Set the text size to 2.  设置文字大小为2
+    M5.Lcd.setTextSize(2);  // Set the text size to 2.  设置文字大小为2
     M5.Lcd.println("MFRC522 Test");
     Wire.begin();  // Wire init, adding the I2C bus.  Wire初始化, 加入i2c总线
 
@@ -45,4 +45,4 @@ void loop() {
         M5.Lcd.print(mfrc522.uid.uidByte[i], HEX);
     }
     M5.Lcd.println("");
-}
\ No newline at end of file
+}