diff --git a/library/stdarch/crates/core_arch/src/lib.rs b/library/stdarch/crates/core_arch/src/lib.rs
index cce743a3e89d..c73e309e72da 100644
--- a/library/stdarch/crates/core_arch/src/lib.rs
+++ b/library/stdarch/crates/core_arch/src/lib.rs
@@ -4,7 +4,6 @@
 #![allow(unused_features)]
 #![deny(rust_2018_idioms)]
 #![feature(
-    asm,
     custom_inner_attributes,
     link_llvm_intrinsics,
     platform_intrinsics,
diff --git a/library/stdarch/crates/std_detect/src/lib.rs b/library/stdarch/crates/std_detect/src/lib.rs
index f3557515bcf1..a17bd40e04f2 100644
--- a/library/stdarch/crates/std_detect/src/lib.rs
+++ b/library/stdarch/crates/std_detect/src/lib.rs
@@ -17,7 +17,6 @@
 #![deny(rust_2018_idioms)]
 #![allow(clippy::shadow_reuse)]
 #![deny(clippy::missing_inline_in_public_items)]
-#![cfg_attr(all(target_os = "freebsd", target_arch = "aarch64"), feature(asm))]
 #![cfg_attr(test, allow(unused_imports))]
 #![cfg_attr(feature = "std_detect_file_io", feature(vec_spare_capacity))]
 #![no_std]