diff --git a/src/arch/aarch64.rs b/src/arch/aarch64.rs
index be42f31aab..3d8711adb7 100644
--- a/src/arch/aarch64.rs
+++ b/src/arch/aarch64.rs
@@ -1,3 +1,5 @@
+use core::arch::asm;
+
 use crate::{
     Arch,
     MemoryArea,
diff --git a/src/arch/riscv64/sv39.rs b/src/arch/riscv64/sv39.rs
index 7b14130b5b..2e52caeb3e 100644
--- a/src/arch/riscv64/sv39.rs
+++ b/src/arch/riscv64/sv39.rs
@@ -1,3 +1,5 @@
+use core::arch::asm;
+
 use crate::{
     Arch,
     MemoryArea,
diff --git a/src/arch/riscv64/sv48.rs b/src/arch/riscv64/sv48.rs
index 5e1eff9d59..a16d8391d8 100644
--- a/src/arch/riscv64/sv48.rs
+++ b/src/arch/riscv64/sv48.rs
@@ -1,3 +1,5 @@
+use core::arch::asm;
+
 use crate::{
     Arch,
     MemoryArea,
diff --git a/src/arch/x86_64.rs b/src/arch/x86_64.rs
index da100f7bee..555de30c18 100644
--- a/src/arch/x86_64.rs
+++ b/src/arch/x86_64.rs
@@ -1,3 +1,5 @@
+use core::arch::asm;
+
 use crate::{
     Arch,
     MemoryArea,
diff --git a/src/lib.rs b/src/lib.rs
index 58d27a564b..099c240427 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,5 @@
 #![cfg_attr(not(feature = "std"), no_std)]
-#![feature(asm, doc_cfg)]
+#![feature(doc_cfg)]
 
 pub use crate::{
     allocator::*,