diff --git a/src/b15f.rs b/src/b15f.rs
index 221e823..0cef3a0 100644
--- a/src/b15f.rs
+++ b/src/b15f.rs
@@ -6,7 +6,7 @@ use std::{process::Command, time::Duration, fmt::Debug, thread::sleep};
 use rand::Rng;
 use serialport::SerialPort;
 
-use crate::{assert::assert_in_range, error::Error, request::Request, usart::read_sized, build_request, read_typed};
+use crate::{assert::assert_in_range, error::Error, request::Request, usart::read_sized, build_request};
 
 macro_rules! log {
 	($text: literal, $($arg:tt)*) => (println!(concat!("[B15F] ", $text), $($arg)*));
@@ -150,8 +150,8 @@ impl B15F {
 		
 		self.usart.write(build_request![request, reversed])?;
 
-		let aw: u8 = read_typed!(self.usart, u8);
-		if aw != B15F::MSG_OK {
+		let aw = read_sized::<1>(&mut self.usart)?;
+		if aw[0] != B15F::MSG_OK {
 			return Err(format!("Setting Port {} failed", PORT).into());
 		}
 
@@ -193,8 +193,8 @@ impl B15F {
 		self.usart.clear(serialport::ClearBuffer::Input)?;
 		self.usart.write(build_request![request])?;
 
-		let aw: u8 = read_typed!(self.usart, u8);
-		Ok(u8::reverse_bits(aw))
+		let aw = read_sized::<1>(&mut self.usart)?;
+		Ok(u8::reverse_bits(aw[0]))
 	}
 
 	/// Yields information about the installed firmware on the B15
@@ -247,9 +247,9 @@ impl B15F {
 			data_count[0] -= 1;
 		}
 
-		let aw: u8 = read_typed!(self.usart, u8);
-		if aw != B15F::MSG_OK {
-			return Err(format!("Board info is faulty: code {}", aw).into());
+		let aw = read_sized::<1>(&mut self.usart)?;
+		if aw[0] != B15F::MSG_OK {
+			return Err(format!("Board info is faulty: code {}", aw[0]).into());
 		}		
 
 		Ok(info)
@@ -279,8 +279,10 @@ impl B15F {
 		
 		self.usart.write(build_request!(Request::IntTest, dummy & 0xFF, dummy >> 8))?;
 
-		let aw: u16 = read_typed!(self.usart, u16);
-		if aw != dummy * 3 {
+		let aw = read_sized::<2>(&mut self.usart)?;
+		
+		let result = u16::from_le_bytes(aw);
+		if result != dummy * 3 {
 			return Err("Int conversion failed".into());
 		}
 
diff --git a/src/usart.rs b/src/usart.rs
index 41e5b77..67adc40 100644
--- a/src/usart.rs
+++ b/src/usart.rs
@@ -1,24 +1,6 @@
 use serialport::SerialPort;
 use crate::error::Error;
 
-/// Reads from a USART connecction and casts the result into the specified type
-/// 
-/// # Errors
-/// This macro may throw an `error::Error` when reading from the connection fails.
-/// Due to the implementation of this macro, an erroneous result is returned early
-/// with the `?` operator, and not unwrapped.
-/// 
-/// # Unsafe
-/// This macro makes use of `std::mem::transmute`.
-#[macro_export]
-macro_rules! read_typed {
-	($usart: expr, $T: ty) => {
-		unsafe {
-			std::mem::transmute(read_sized::<{ std::mem::size_of::<$T>() }>(&mut $usart)?)
-		}
-	};
-}
-
 pub fn read_sized<const N: usize> (usart: &mut Box<dyn SerialPort>) -> Result<[u8; N], Error> {
 	let mut buf: [u8; N] = [0; N];