diff --git a/esp32-wroom-rp/src/gpio.rs b/esp32-wroom-rp/src/gpio.rs
index 13aa647..e161baf 100644
--- a/esp32-wroom-rp/src/gpio.rs
+++ b/esp32-wroom-rp/src/gpio.rs
@@ -154,7 +154,7 @@ impl Default for EspControlPins<(), (), (), ()> {
             cs: (),
             gpio0: (),
             resetn: (),
-            ack: ()
+            ack: (),
         }
     }
 }
diff --git a/esp32-wroom-rp/src/lib.rs b/esp32-wroom-rp/src/lib.rs
index caeb448..d57ba68 100644
--- a/esp32-wroom-rp/src/lib.rs
+++ b/esp32-wroom-rp/src/lib.rs
@@ -91,7 +91,7 @@ pub mod wifi;
 pub mod protocol;
 mod spi;
 
-use protocol::{ProtocolInterface, ProtocolError};
+use protocol::{ProtocolError, ProtocolInterface};
 
 use defmt::{write, Format, Formatter};
 use embedded_hal::blocking::delay::DelayMs;
@@ -111,7 +111,11 @@ impl Format for Error {
     fn format(&self, fmt: Formatter) {
         match self {
             Error::Bus => write!(fmt, "Bus error"),
-            Error::Protocol(e) => write!(fmt, "Communication protocol error with ESP32 WiFi target: {}", e),
+            Error::Protocol(e) => write!(
+                fmt,
+                "Communication protocol error with ESP32 WiFi target: {}",
+                e
+            ),
         }
     }
 }
diff --git a/esp32-wroom-rp/src/protocol.rs b/esp32-wroom-rp/src/protocol.rs
index 1b540fe..579de4e 100644
--- a/esp32-wroom-rp/src/protocol.rs
+++ b/esp32-wroom-rp/src/protocol.rs
@@ -245,7 +245,7 @@ pub enum ProtocolError {
     CommunicationTimeout,
     InvalidCommand,
     InvalidNumberOfParameters,
-    TooManyParameters
+    TooManyParameters,
 }
 
 impl Format for ProtocolError {
diff --git a/host-tests/tests/spi.rs b/host-tests/tests/spi.rs
index 6512d3d..1557348 100644
--- a/host-tests/tests/spi.rs
+++ b/host-tests/tests/spi.rs
@@ -1,11 +1,9 @@
-use embedded_hal_mock::spi;
-use embedded_hal_mock::pin::{
-    Mock as PinMock, State as PinState, Transaction as PinTransaction,
-};
 use embedded_hal_mock::delay::MockNoop;
+use embedded_hal_mock::pin::{Mock as PinMock, State as PinState, Transaction as PinTransaction};
+use embedded_hal_mock::spi;
 
-use esp32_wroom_rp::wifi::Wifi;
 use esp32_wroom_rp::gpio::EspControlInterface;
+use esp32_wroom_rp::wifi::Wifi;
 
 struct EspControlMock {}
 
@@ -18,7 +16,7 @@ impl EspControlInterface for EspControlMock {
         true
     }
 
-   fn  wait_for_esp_select(&mut self) {}
+    fn wait_for_esp_select(&mut self) {}
 
     fn wait_for_esp_ack(&self) {}
 
@@ -41,7 +39,6 @@ fn invalid_command_induces_nina_protocol_version_mismatch_error() {
         spi::Transaction::transfer(vec![0x37], vec![0x0]),
         spi::Transaction::transfer(vec![0x0], vec![0x0]),
         spi::Transaction::transfer(vec![0xee], vec![0x0]),
-
         // wait_response_cmd()
         spi::Transaction::transfer(vec![0xff], vec![0xef]),
     ];
@@ -54,7 +51,12 @@ fn invalid_command_induces_nina_protocol_version_mismatch_error() {
     let mut wifi = Wifi::init(&mut spi, &mut pins, &mut delay).ok().unwrap();
     let f = wifi.firmware_version();
 
-    assert_eq!(f.unwrap_err(), esp32_wroom_rp::Error::Protocol(esp32_wroom_rp::protocol::ProtocolError::NinaProtocolVersionMismatch));
+    assert_eq!(
+        f.unwrap_err(),
+        esp32_wroom_rp::Error::Protocol(
+            esp32_wroom_rp::protocol::ProtocolError::NinaProtocolVersionMismatch
+        )
+    );
 
     spi.done();
 }