diff --git a/esp-hal-common/src/interrupt/xtensa.rs b/esp-hal-common/src/interrupt/xtensa.rs
index 8f4608c0a..e8ddfe4de 100644
--- a/esp-hal-common/src/interrupt/xtensa.rs
+++ b/esp-hal-common/src/interrupt/xtensa.rs
@@ -174,42 +174,42 @@ unsafe fn core1_interrupt_peripheral() -> *const crate::pac::interrupt_core1::Re
 
 #[no_mangle]
 #[link_section = ".rwtext"]
-fn __level1_interrupt() {
+fn __level_1_interrupt() {
     unsafe { level1_interrupt() };
 }
 
 #[no_mangle]
 #[link_section = ".rwtext"]
-fn __level2_interrupt() {
+fn __level_2_interrupt() {
     unsafe { level2_interrupt() };
 }
 
 #[no_mangle]
 #[link_section = ".rwtext"]
-fn __level3_interrupt() {
+fn __level_3_interrupt() {
     unsafe { level3_interrupt() };
 }
 
 #[no_mangle]
 #[link_section = ".rwtext"]
-fn __level4_interrupt() {
+fn __level_4_interrupt() {
     unsafe { level4_interrupt() };
 }
 
 #[no_mangle]
 #[link_section = ".rwtext"]
-fn __level5_interrupt() {
+fn __level_5_interrupt() {
     unsafe { level5_interrupt() };
 }
 
 #[no_mangle]
 #[link_section = ".rwtext"]
-fn __level6_interrupt() {
+fn __level_6_interrupt() {
     unsafe { level6_interrupt() };
 }
 
 #[no_mangle]
 #[link_section = ".rwtext"]
-fn __level7_interrupt() {
+fn __level_7_interrupt() {
     unsafe { level7_interrupt() };
 }
diff --git a/esp32s2-hal/examples/gpio_interrupt.rs b/esp32s2-hal/examples/gpio_interrupt.rs
index b8f1c5196..ec15fab2e 100644
--- a/esp32s2-hal/examples/gpio_interrupt.rs
+++ b/esp32s2-hal/examples/gpio_interrupt.rs
@@ -19,7 +19,7 @@ use esp_hal_common::{
     PullDown,
 };
 use panic_halt as _;
-use xtensa_lx::mutex::{Mutex, CriticalSectionMutex};
+use xtensa_lx::mutex::{CriticalSectionMutex, Mutex};
 use xtensa_lx_rt::entry;
 
 static mut SERIAL: CriticalSectionMutex<RefCell<Option<Serial<UART0>>>> =
@@ -33,7 +33,7 @@ fn main() -> ! {
 
     // Disable the TIMG watchdog timer.
     let mut timer0 = Timer::new(peripherals.TIMG0);
-    let mut serial0 = Serial::new(peripherals.UART0).unwrap();
+    let serial0 = Serial::new(peripherals.UART0).unwrap();
 
     timer0.disable();
 
@@ -61,7 +61,9 @@ fn main() -> ! {
     let mut delay = Delay::new();
 
     unsafe {
-        xtensa_lx::interrupt::enable_mask(xtensa_lx_rt::interrupt::CpuInterruptLevel::Level2.mask());
+        xtensa_lx::interrupt::enable_mask(
+            xtensa_lx_rt::interrupt::CpuInterruptLevel::Level2.mask(),
+        );
     }
 
     loop {