diff --git a/variants/XIAO_ESP32C3/pins_arduino.h b/variants/XIAO_ESP32C3/pins_arduino.h
index ca89c5f55..061e743f5 100644
--- a/variants/XIAO_ESP32C3/pins_arduino.h
+++ b/variants/XIAO_ESP32C3/pins_arduino.h
@@ -17,7 +17,6 @@ static const uint8_t SCK = 8;
 static const uint8_t A0 = 2;
 static const uint8_t A1 = 3;
 static const uint8_t A2 = 4;
-static const uint8_t A3 = 5;
 
 static const uint8_t D0 = 2;
 static const uint8_t D1 = 3;