diff --git a/atmel-samd/boards/arduino_zero/init.c b/atmel-samd/boards/arduino_zero/init.c
index 5c93ab6f1d..6ec302e6f7 100644
--- a/atmel-samd/boards/arduino_zero/init.c
+++ b/atmel-samd/boards/arduino_zero/init.c
@@ -18,20 +18,20 @@ extern struct usart_module usart_instance;
 
 void configure_usart(void)
 {
-  struct usart_config config_usart;
+    struct usart_config config_usart;
 
-  usart_get_config_defaults(&config_usart);
+    usart_get_config_defaults(&config_usart);
 
-  config_usart.baudrate    = 115200;
-  config_usart.mux_setting = EDBG_CDC_SERCOM_MUX_SETTING;
-  config_usart.pinmux_pad0 = EDBG_CDC_SERCOM_PINMUX_PAD0;
-  config_usart.pinmux_pad1 = EDBG_CDC_SERCOM_PINMUX_PAD1;
-  config_usart.pinmux_pad2 = EDBG_CDC_SERCOM_PINMUX_PAD2;
-  config_usart.pinmux_pad3 = EDBG_CDC_SERCOM_PINMUX_PAD3;
+    config_usart.baudrate    = 115200;
+    config_usart.mux_setting = EDBG_CDC_SERCOM_MUX_SETTING;
+    config_usart.pinmux_pad0 = EDBG_CDC_SERCOM_PINMUX_PAD0;
+    config_usart.pinmux_pad1 = EDBG_CDC_SERCOM_PINMUX_PAD1;
+    config_usart.pinmux_pad2 = EDBG_CDC_SERCOM_PINMUX_PAD2;
+    config_usart.pinmux_pad3 = EDBG_CDC_SERCOM_PINMUX_PAD3;
 
-  while (usart_init(&usart_instance, EDBG_CDC_MODULE, &config_usart) != STATUS_OK) {
-  }
-  usart_enable(&usart_instance);
+    while (usart_init(&usart_instance, EDBG_CDC_MODULE, &config_usart) != STATUS_OK) {
+    }
+    usart_enable(&usart_instance);
 }
 
 void board_init(void)
diff --git a/atmel-samd/boards/arduino_zero/mpconfigboard.h b/atmel-samd/boards/arduino_zero/mpconfigboard.h
index 233573ad0d..16a929ddd0 100644
--- a/atmel-samd/boards/arduino_zero/mpconfigboard.h
+++ b/atmel-samd/boards/arduino_zero/mpconfigboard.h
@@ -3,12 +3,10 @@
 #define MICROPY_HW_BOARD_NAME "Arduino Zero"
 #define MICROPY_HW_MCU_NAME "samd21g18"
 
-#define MICROPY_HW_LED_MSC  PIN_PA17 // red
+// #define MICROPY_HW_LED_MSC  PIN_PA17 // red
 #define MICROPY_HW_LED_TX   PIN_PA27
 #define MICROPY_HW_LED_RX   PIN_PB03
 
-#define MICROPY_HW_NEOPIXEL &pin_PB22
-
 #define AUTORESET_DELAY_MS 500
 
 #include "internal_flash.h"