diff --git a/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.h b/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.h
index ff5512d814..1a3fa72f21 100644
--- a/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.h
+++ b/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.h
@@ -17,4 +17,4 @@
 // https://learn.adafruit.com/assets/46254
 // https://learn.adafruit.com/assets/46255
 #define DEFAULT_I2C_BUS_SCL (&pin_PA23)
-#define DEFAULT_I2C_BUS_SDA (&pin_PA22)
\ No newline at end of file
+#define DEFAULT_I2C_BUS_SDA (&pin_PA22)
diff --git a/ports/atmel-samd/boards/feather_m4_express/mpconfigboard.h b/ports/atmel-samd/boards/feather_m4_express/mpconfigboard.h
index 930dc9ee28..48c63454e5 100644
--- a/ports/atmel-samd/boards/feather_m4_express/mpconfigboard.h
+++ b/ports/atmel-samd/boards/feather_m4_express/mpconfigboard.h
@@ -33,4 +33,4 @@
 #include "external_flash/external_flash.h"
 
 #define DEFAULT_I2C_BUS_SCL (&pin_PA13)
-#define DEFAULT_I2C_BUS_SDA (&pin_PA12)
\ No newline at end of file
+#define DEFAULT_I2C_BUS_SDA (&pin_PA12)
diff --git a/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.h b/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.h
index 4058a9bcd2..7b0280acb3 100644
--- a/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.h
+++ b/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.h
@@ -48,4 +48,4 @@
 #include "external_flash/external_flash.h"
 
 #define DEFAULT_I2C_BUS_SCL (&pin_PA23)
-#define DEFAULT_I2C_BUS_SDA (&pin_PA22)
\ No newline at end of file
+#define DEFAULT_I2C_BUS_SDA (&pin_PA22)
diff --git a/ports/atmel-samd/boards/itsybitsy_m4_express/mpconfigboard.h b/ports/atmel-samd/boards/itsybitsy_m4_express/mpconfigboard.h
index 0ff0ee2c34..e8335ef3f8 100644
--- a/ports/atmel-samd/boards/itsybitsy_m4_express/mpconfigboard.h
+++ b/ports/atmel-samd/boards/itsybitsy_m4_express/mpconfigboard.h
@@ -33,4 +33,4 @@
 #include "external_flash/external_flash.h"
 
 #define DEFAULT_I2C_BUS_SCL (&pin_PA13)
-#define DEFAULT_I2C_BUS_SDA (&pin_PA12)
\ No newline at end of file
+#define DEFAULT_I2C_BUS_SDA (&pin_PA12)