diff --git a/README.md b/README.md
index 823273843c..d03bd49dce 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,6 @@ The R3 original kernel is provided as a separate package [`r3_kernel`][].
 #![feature(naked_functions)]
 #![feature(const_mut_refs)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![no_std]
 #![no_main]
 
diff --git a/examples/basic_gr_peach/src/main.rs b/examples/basic_gr_peach/src/main.rs
index 826d0e524d..25a9748d44 100644
--- a/examples/basic_gr_peach/src/main.rs
+++ b/examples/basic_gr_peach/src/main.rs
@@ -3,7 +3,6 @@
 #![feature(const_mut_refs)]
 #![feature(naked_functions)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![no_std]
 #![no_main]
diff --git a/examples/basic_nucleo_f401re/src/main.rs b/examples/basic_nucleo_f401re/src/main.rs
index 5e539c54dc..e495629548 100644
--- a/examples/basic_nucleo_f401re/src/main.rs
+++ b/examples/basic_nucleo_f401re/src/main.rs
@@ -3,7 +3,6 @@
 #![feature(naked_functions)]
 #![feature(const_mut_refs)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![no_std]
 #![no_main]
diff --git a/examples/basic_rp_pico/src/main.rs b/examples/basic_rp_pico/src/main.rs
index 7386d4c478..6990ce3b1d 100644
--- a/examples/basic_rp_pico/src/main.rs
+++ b/examples/basic_rp_pico/src/main.rs
@@ -3,7 +3,6 @@
 #![feature(naked_functions)]
 #![feature(const_mut_refs)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![no_std]
 #![no_main]
diff --git a/examples/basic_wio_terminal/src/main.rs b/examples/basic_wio_terminal/src/main.rs
index 268d37c984..172a679ac7 100644
--- a/examples/basic_wio_terminal/src/main.rs
+++ b/examples/basic_wio_terminal/src/main.rs
@@ -5,7 +5,6 @@
 #![feature(const_mut_refs)]
 #![feature(asm_const)]
 #![feature(let_else)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![no_std]
 #![no_main]
diff --git a/examples/smp_rp_pico/src/main.rs b/examples/smp_rp_pico/src/main.rs
index d2ab3e9e0d..170576ae98 100644
--- a/examples/smp_rp_pico/src/main.rs
+++ b/examples/smp_rp_pico/src/main.rs
@@ -4,7 +4,6 @@
 #![feature(naked_functions)]
 #![feature(const_mut_refs)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![no_std]
 #![no_main]
diff --git a/src/r3_port_arm/src/lib.rs b/src/r3_port_arm/src/lib.rs
index 4e9ad981b1..74e8a181c3 100644
--- a/src/r3_port_arm/src/lib.rs
+++ b/src/r3_port_arm/src/lib.rs
@@ -8,7 +8,6 @@
 #![feature(lint_reasons)]
 #![feature(decl_macro)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![allow(clippy::verbose_bit_mask)] // questionable
 #![cfg_attr(
diff --git a/src/r3_port_arm_m/src/lib.rs b/src/r3_port_arm_m/src/lib.rs
index 40ffa22760..c72401c3cd 100644
--- a/src/r3_port_arm_m/src/lib.rs
+++ b/src/r3_port_arm_m/src/lib.rs
@@ -7,7 +7,6 @@
 #![feature(slice_ptr_len)]
 #![feature(decl_macro)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![cfg_attr(
     feature = "doc",
diff --git a/src/r3_port_arm_m_test_driver/src/main.rs b/src/r3_port_arm_m_test_driver/src/main.rs
index 3d8c301a39..d5ef0fb743 100644
--- a/src/r3_port_arm_m_test_driver/src/main.rs
+++ b/src/r3_port_arm_m_test_driver/src/main.rs
@@ -3,7 +3,6 @@
 #![feature(naked_functions)]
 #![feature(const_mut_refs)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![cfg_attr(feature = "run", no_std)]
 #![cfg_attr(feature = "run", no_main)]
diff --git a/src/r3_port_arm_test_driver/src/main.rs b/src/r3_port_arm_test_driver/src/main.rs
index a29738dae0..3bf0bcc20d 100644
--- a/src/r3_port_arm_test_driver/src/main.rs
+++ b/src/r3_port_arm_test_driver/src/main.rs
@@ -8,7 +8,6 @@
 #![feature(naked_functions)]
 #![feature(const_mut_refs)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![cfg_attr(feature = "run", no_std)]
 #![cfg_attr(feature = "run", no_main)]
diff --git a/src/r3_port_riscv/src/lib.rs b/src/r3_port_riscv/src/lib.rs
index 8acb5045bf..04cb247d3a 100644
--- a/src/r3_port_riscv/src/lib.rs
+++ b/src/r3_port_riscv/src/lib.rs
@@ -8,7 +8,6 @@
 #![feature(decl_macro)]
 #![feature(raw_ref_op)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![feature(doc_cfg)]
 #![feature(linkage)]
 #![deny(unsafe_op_in_unsafe_fn)]
diff --git a/src/r3_port_riscv_test_driver/src/main.rs b/src/r3_port_riscv_test_driver/src/main.rs
index 80fdd29652..2cad3ecabb 100644
--- a/src/r3_port_riscv_test_driver/src/main.rs
+++ b/src/r3_port_riscv_test_driver/src/main.rs
@@ -4,7 +4,6 @@
 #![feature(const_mut_refs)]
 #![feature(decl_macro)]
 #![feature(asm_const)]
-#![feature(asm_sym)]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![cfg_attr(feature = "run", no_std)]
 #![cfg_attr(feature = "run", no_main)]
diff --git a/src/r3_portkit/src/lib.rs b/src/r3_portkit/src/lib.rs
index 80e0f6ec7e..81b53a93d9 100644
--- a/src/r3_portkit/src/lib.rs
+++ b/src/r3_portkit/src/lib.rs
@@ -6,7 +6,6 @@
 #![feature(decl_macro)]
 #![feature(asm_const)]
 #![feature(const_cmp)]
-#![feature(asm_sym)]
 #![cfg_attr(
     feature = "doc",
     doc(html_logo_url = "https://r3-os.github.io/r3/logo-small.svg")
diff --git a/src/r3_portkit/src/sym.rs b/src/r3_portkit/src/sym.rs
index d02bf1b755..1ee780ef9a 100644
--- a/src/r3_portkit/src/sym.rs
+++ b/src/r3_portkit/src/sym.rs
@@ -27,7 +27,6 @@ pub use core::{arch::asm, mem};
 /// ```
 /// #![feature(naked_functions)]
 /// #![feature(asm_const)]
-/// #![feature(asm_sym)]
 /// use r3_portkit::sym::sym_static;
 /// use std::{arch::asm, cell::Cell};
 ///