diff --git a/src/webee.rs b/src/webee.rs
index 4f697d3..53d9ae0 100644
--- a/src/webee.rs
+++ b/src/webee.rs
@@ -4,18 +4,19 @@ use arduino_hal::prelude::*;
 use embedded_hal::serial::{Read};
 
 mod vector;
+
 pub use vector::Vector;
 
-pub struct Webee<USART, RX, TX> {
+pub struct Webee<USART, RX, TX> where
+    USART: UsartOps<H, RX, TX>
+{
     webee: Usart<USART, RX, TX>,
 }
 
-enum SEND_CMD {
-
-}
+enum SEND_CMD {}
 
 impl<USART, RX, TX> Webee<USART, RX, TX> {
-    const STOP : u8 = 0xFF;
+    const STOP: u8 = 0xFF;
 
     pub fn new(device: USART, rx: RX, tx: TX) -> Self {
         Self {
@@ -32,8 +33,8 @@ impl<USART, RX, TX> Webee<USART, RX, TX> {
     }
 
     fn recv(&mut self) -> Vector<u8> {
-        const buffer : Vector<u8> = Vector::new(0, &[]);
-        let byte : u8 = self.webee.read_byte();
+        const buffer: Vector<u8> = Vector::new(0, &[]);
+        let byte: u8 = self.webee.read_byte();
 
         while byte != self.STOP {
             buffer.push(byte);