diff --git a/README.md b/README.md
index bc85f4e656fb6d9364f105a5e5c3e537eacc05c9..d180f1985ed09bdb8f3c1033b7af20d96bebe4d5 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ This code uses the [Arduino pico](https://github.com/earlephilhower/arduino-pico
 
 ## Code
 
-```
+```C++
 #include <Adafruit_TinyUSB.h>
 #include <I2S.h>