diff --git a/cpufeatures/README.md b/cpufeatures/README.md
index 9aace519..ed240f05 100644
--- a/cpufeatures/README.md
+++ b/cpufeatures/README.md
@@ -18,7 +18,7 @@ This crate is intended as a stopgap until Rust [RFC 2725] adding first-class
 target feature detection macros to `libcore` is implemented.
 
 ## Example
-```
+```rust
 #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
 pub mod x86_backend {
     // This macro creates `cpuid_aes_sha` module