diff --git a/arduino-hal/src/lib.rs b/arduino-hal/src/lib.rs
index 25b4c03ff6..f866faf27d 100644
--- a/arduino-hal/src/lib.rs
+++ b/arduino-hal/src/lib.rs
@@ -13,7 +13,10 @@
 #![cfg_attr(feature = "arduino-nano", doc = "**Arduino Nano**.")]
 #![cfg_attr(feature = "arduino-uno", doc = "**Arduino Uno**.")]
 #![cfg_attr(feature = "sparkfun-promicro", doc = "**SparkFun ProMicro**.")]
-#![cfg_attr(feature = "sparkfun-promini-5v", doc = "**SparkFun ProMini 5V (16MHz)**.")]
+#![cfg_attr(
+    feature = "sparkfun-promini-5v",
+    doc = "**SparkFun ProMini 5V (16MHz)**."
+)]
 #![cfg_attr(feature = "trinket-pro", doc = "**Trinket Pro**.")]
 #![cfg_attr(feature = "trinket", doc = "**Trinket**.")]
 #![cfg_attr(feature = "nano168", doc = "**Nano clone (ATmega168)**.")]
@@ -259,7 +262,11 @@ macro_rules! default_serial {
         )
     };
 }
-#[cfg(any(feature = "arduino-nano", feature = "nano168", feature = "sparkfun-promini-5v"))]
+#[cfg(any(
+    feature = "arduino-nano",
+    feature = "nano168",
+    feature = "sparkfun-promini-5v"
+))]
 #[macro_export]
 macro_rules! default_serial {
     ($p:expr, $pins:expr, $baud:expr) => {
diff --git a/arduino-hal/src/port/mod.rs b/arduino-hal/src/port/mod.rs
index ce85b31cc1..f4ed4d6a9b 100644
--- a/arduino-hal/src/port/mod.rs
+++ b/arduino-hal/src/port/mod.rs
@@ -27,9 +27,19 @@ pub use leonardo::*;
 mod mega;
 #[cfg(any(feature = "arduino-mega2560", feature = "arduino-mega1280"))]
 pub use mega::*;
-#[cfg(any(feature = "arduino-nano", feature = "arduino-uno", feature = "nano168", feature = "sparkfun-promini-5v"))]
+#[cfg(any(
+    feature = "arduino-nano",
+    feature = "arduino-uno",
+    feature = "nano168",
+    feature = "sparkfun-promini-5v"
+))]
 mod uno;
-#[cfg(any(feature = "arduino-nano", feature = "arduino-uno", feature = "nano168", feature = "sparkfun-promini-5v"))]
+#[cfg(any(
+    feature = "arduino-nano",
+    feature = "arduino-uno",
+    feature = "nano168",
+    feature = "sparkfun-promini-5v"
+))]
 pub use uno::*;
 #[cfg(feature = "sparkfun-promicro")]
 mod promicro;