diff --git a/content/Rust-1.88.0.md b/content/Rust-1.88.0.md
index 74b19e147..861c8082e 100644
--- a/content/Rust-1.88.0.md
+++ b/content/Rust-1.88.0.md
@@ -50,7 +50,7 @@ For example:
 
 ```rust
 #[unsafe(naked)]
-pub unsafe extern "sysv64" fn wrapping_add(a: u64, b: u64) {
+pub unsafe extern "sysv64" fn wrapping_add(a: u64, b: u64) -> u64 {
     // Equivalent to `a.wrapping_add(b)`.
     core::arch::naked_asm!(
         "add rax, rdi, rsi",