diff --git a/README.md b/README.md
index bd23d92..412613f 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ fn main() -> Result<(), obd2::Error> {
 alternatively, you could use a serial port provided by your operating system such as 
 /dev/ttyUSB0 on unix-like systems
 
-```
+```rs
 let mut device = Obd2::<Elm327::<SerialPort>>::new(Elm327::new(SerialPort::new("/dev/ttyUSB0")?)?)?;
 ```