diff --git a/src/libcore/ffi.rs b/src/libcore/ffi.rs
index 8ee7297a8cc52..583c155a78795 100644
--- a/src/libcore/ffi.rs
+++ b/src/libcore/ffi.rs
@@ -67,7 +67,7 @@ impl fmt::Debug for VaListImpl {
 }
 
 /// AArch64 ABI implementation of a `va_list`. See the
-/// [Aarch64 Procedure Call Standard] for more details.
+/// [AArch64 Procedure Call Standard] for more details.
 ///
 /// [AArch64 Procedure Call Standard]:
 /// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055b/IHI0055B_aapcs64.pdf
diff --git a/src/librustc_codegen_llvm/va_arg.rs b/src/librustc_codegen_llvm/va_arg.rs
index 960118a7b08bc..7d4770d6b8272 100644
--- a/src/librustc_codegen_llvm/va_arg.rs
+++ b/src/librustc_codegen_llvm/va_arg.rs
@@ -108,12 +108,12 @@ pub(super) fn emit_va_arg(
             emit_ptr_va_arg(bx, addr, target_ty, false,
                             Align::from_bytes(4).unwrap(), true)
         }
-        // Windows Aarch64
+        // Windows AArch64
         ("aarch64", true) => {
             emit_ptr_va_arg(bx, addr, target_ty, false,
                             Align::from_bytes(8).unwrap(), false)
         }
-        // iOS Aarch64
+        // iOS AArch64
         ("aarch64", _) if target.target_os == "ios" => {
             emit_ptr_va_arg(bx, addr, target_ty, false,
                             Align::from_bytes(8).unwrap(), true)