diff --git a/src/app_ui/address.rs b/src/app_ui/address.rs
index 1534985..933ffd4 100644
--- a/src/app_ui/address.rs
+++ b/src/app_ui/address.rs
@@ -26,17 +26,13 @@ use nanos_ui::ui::{Field, MultiFieldReview};
 const DISPLAY_ADDR_BYTES_LEN: usize = 20;
 
 pub fn ui_display_pk(addr: &[u8]) -> Result<bool, Reply> {
-    let addr_hex_str_buf =
-        to_hex_all_caps(&addr[addr.len() - DISPLAY_ADDR_BYTES_LEN as usize..])
-            .map_err(|_| Reply(SW_DISPLAY_ADDRESS_FAIL))?;
+    let addr_hex_str_buf = to_hex_all_caps(&addr[addr.len() - DISPLAY_ADDR_BYTES_LEN as usize..])
+        .map_err(|_| Reply(SW_DISPLAY_ADDRESS_FAIL))?;
     let addr_hex_str = from_utf8(&addr_hex_str_buf[..DISPLAY_ADDR_BYTES_LEN * 2])
         .map_err(|_| Reply(SW_DISPLAY_ADDRESS_FAIL))?;
 
     let mut addr_hex_str_with_prefix_buf = [0u8; DISPLAY_ADDR_BYTES_LEN * 2 + 2];
-    concatenate(
-        &["0x", &addr_hex_str],
-        &mut addr_hex_str_with_prefix_buf,
-    );
+    concatenate(&["0x", &addr_hex_str], &mut addr_hex_str_with_prefix_buf);
     let addr_hex_str_with_prefix =
         from_utf8(&addr_hex_str_with_prefix_buf).map_err(|_| Reply(SW_DISPLAY_ADDRESS_FAIL))?;
 
diff --git a/src/app_ui/sign.rs b/src/app_ui/sign.rs
index 758f623..e3a8d4f 100644
--- a/src/app_ui/sign.rs
+++ b/src/app_ui/sign.rs
@@ -46,7 +46,8 @@ pub fn ui_display_tx(tx: &Tx) -> Result<bool, Reply> {
         from_utf8(&addr_with_prefix_buf).map_err(|_| Reply(SW_TX_DISPLAY_FAIL))?;
 
     // Format memo
-    let memo_str = from_utf8(&tx.memo[..tx.memo_len as usize]).map_err(|_| Reply(SW_TX_DISPLAY_FAIL))?;
+    let memo_str =
+        from_utf8(&tx.memo[..tx.memo_len as usize]).map_err(|_| Reply(SW_TX_DISPLAY_FAIL))?;
 
     // Define transaction review fields
     let my_fields = [
diff --git a/src/handlers/sign_tx.rs b/src/handlers/sign_tx.rs
index d9ff288..2846121 100644
--- a/src/handlers/sign_tx.rs
+++ b/src/handlers/sign_tx.rs
@@ -15,7 +15,7 @@
  *  limitations under the License.
  *****************************************************************************/
 use crate::app_ui::sign::ui_display_tx;
-use crate::utils::{read_bip32_path, varint_read, slice_or_err, MAX_ALLOWED_PATH_LEN};
+use crate::utils::{read_bip32_path, slice_or_err, varint_read, MAX_ALLOWED_PATH_LEN};
 use crate::{SW_DENY, SW_TX_HASH_FAIL, SW_TX_PARSING_FAIL, SW_TX_SIGN_FAIL, SW_WRONG_TX_LENGTH};
 use nanos_sdk::bindings::{
     cx_hash_no_throw, cx_hash_t, cx_keccak_init_no_throw, cx_sha3_t, CX_LAST, CX_OK,
@@ -50,15 +50,15 @@ impl<'a> TryFrom<&'a [u8]> for Tx<'a> {
         let value = u64::from_be_bytes(slice_or_err(raw_tx, 28, 8)?.try_into().map_err(|_| ())?);
         // Memo length
         let (memo_len_u64, memo_len_size) = varint_read(&raw_tx[36..])?;
-        let memo_len =  memo_len_u64 as usize;
+        let memo_len = memo_len_u64 as usize;
         // Memo
         let memo = slice_or_err(raw_tx, 36 + memo_len_size, memo_len)?;
-        
+
         // Check memo ASCII encoding
         if !memo[..memo_len].iter().all(|&byte| byte.is_ascii()) {
             return Err(());
         }
-        
+
         Ok(Tx {
             nonce,
             value,
@@ -148,7 +148,7 @@ fn compute_signature_and_append(comm: &mut Comm, ctx: &mut TxContext) -> Result<
     let mut message_hash: [u8; 32] = [0u8; 32];
 
     unsafe {
-        if cx_keccak_init_no_throw(&mut keccak256, 256) != CX_OK {            
+        if cx_keccak_init_no_throw(&mut keccak256, 256) != CX_OK {
             return Err(Reply(SW_TX_HASH_FAIL));
         }
         if cx_hash_no_throw(
diff --git a/src/utils.rs b/src/utils.rs
index ee44916..366d650 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -96,14 +96,14 @@ pub fn slice_or_err(slice: &[u8], start: usize, len: usize) -> Result<&[u8], ()>
 }
 
 /// Read a varint from a slice
-pub fn varint_read(input: &[u8]) -> Result<(u64, usize), ()> {    
+pub fn varint_read(input: &[u8]) -> Result<(u64, usize), ()> {
     let mut bytes = [0u8; 8];
     let int_length: usize;
 
     if input.is_empty() {
         return Err(());
     }
-    
+
     let prefix = input[0];
 
     if prefix == 0xFD {
@@ -122,11 +122,11 @@ pub fn varint_read(input: &[u8]) -> Result<(u64, usize), ()> {
         }
         int_length = 8;
     } else {
-       return Ok((u64::from(prefix), 1));
+        return Ok((u64::from(prefix), 1));
     }
 
     let buf = slice_or_err(input, 1, int_length)?;
     bytes[..int_length].copy_from_slice(buf);
     let result = u64::from_le_bytes(bytes);
     Ok((result, int_length + 1))
-}
\ No newline at end of file
+}