diff --git a/crates/std_detect/src/detect/arch/riscv.rs b/crates/std_detect/src/detect/arch/riscv.rs
index b8fd007dff..2368131fea 100644
--- a/crates/std_detect/src/detect/arch/riscv.rs
+++ b/crates/std_detect/src/detect/arch/riscv.rs
@@ -104,15 +104,20 @@ features! {
     /// RV128I Base Integer Instruction Set
 
     @FEATURE: #[unstable(feature = "stdarch_riscv_feature_detection", issue = "111192")] zicsr: "zicsr";
+    without cfg check: true;
     /// "Zicsr" Extension for Control and Status Register (CSR) Instructions
     @FEATURE: #[unstable(feature = "stdarch_riscv_feature_detection", issue = "111192")] zicntr: "zicntr";
+    without cfg check: true;
     /// "Zicntr" Extension for Base Counters and Timers
     @FEATURE: #[unstable(feature = "stdarch_riscv_feature_detection", issue = "111192")] zihpm: "zihpm";
+    without cfg check: true;
     /// "Zihpm" Extension for Hardware Performance Counters
 
     @FEATURE: #[unstable(feature = "stdarch_riscv_feature_detection", issue = "111192")] zifencei: "zifencei";
+    without cfg check: true;
     /// "Zifencei" Extension for Instruction-Fetch Fence
     @FEATURE: #[unstable(feature = "stdarch_riscv_feature_detection", issue = "111192")] zihintpause: "zihintpause";
+    without cfg check: true;
     /// "Zihintpause" Extension for Pause Hint
 
     @FEATURE: #[stable(feature = "riscv_ratified", since = "1.78.0")] m: "m";
diff --git a/crates/std_detect/src/detect/arch/x86.rs b/crates/std_detect/src/detect/arch/x86.rs
index 7fdb72bb4a..8658c46987 100644
--- a/crates/std_detect/src/detect/arch/x86.rs
+++ b/crates/std_detect/src/detect/arch/x86.rs
@@ -224,14 +224,19 @@ features! {
     @FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_complex: "amx-complex";
     /// AMX-COMPLEX (Complex number Operations)
     @FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_avx512: "amx-avx512";
+    without cfg check: true;
     /// AMX-AVX512 (AVX512 operations extended to matrices)
     @FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_fp8: "amx-fp8";
+    without cfg check: true;
     /// AMX-FP8 (Float8 Operations)
     @FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_movrs: "amx-movrs";
+    without cfg check: true;
     /// AMX-MOVRS (Matrix MOVERS operations)
     @FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_tf32: "amx-tf32";
+    without cfg check: true;
     /// AMX-TF32 (TensorFloat32 Operations)
     @FEATURE: #[unstable(feature = "x86_amx_intrinsics", issue = "126622")] amx_transpose: "amx-transpose";
+    without cfg check: true;
     /// AMX-TRANSPOSE (Matrix Transpose Operations)
     @FEATURE: #[stable(feature = "simd_x86", since = "1.27.0")] f16c: "f16c";
     /// F16C (Conversions between IEEE-754 `binary16` and `binary32` formats)
diff --git a/crates/std_detect/src/detect/macros.rs b/crates/std_detect/src/detect/macros.rs
index 6ce842b31e..9315b5ea31 100644
--- a/crates/std_detect/src/detect/macros.rs
+++ b/crates/std_detect/src/detect/macros.rs
@@ -23,7 +23,7 @@ macro_rules! check_cfg_feature {
         $(cfg!(target_feature = $target_feature_lit);)*
     };
     ($feature:tt, $feature_lit:tt, without cfg check: $feature_cfg_check:literal) => {
-        #[expect(unexpected_cfgs, reason = $feature_lit)]
+        #[allow(unexpected_cfgs, reason = $feature_lit)]
         { cfg!(target_feature = $feature_lit) }
     };
 }