diff --git a/src/advance/unsafe/inline-asm.md b/src/advance/unsafe/inline-asm.md
index 12ee253d75..216e7af092 100644
--- a/src/advance/unsafe/inline-asm.md
+++ b/src/advance/unsafe/inline-asm.md
@@ -177,7 +177,7 @@ fn mul(a: u64, b: u64) -> u128 {
     unsafe {
         asm!(
             // The x86 mul instruction takes rax as an implicit input and writes
-            // the 128-bit result of the multiplication to rax:rdx.
+            // the 128-bit result of the multiplication to rdx:rax.
             "mul {}",
             in(reg) a,
             inlateout("rax") b => lo,