diff --git a/library/stdarch/crates/std_detect/src/detect/macros.rs b/library/stdarch/crates/std_detect/src/detect/macros.rs
index 67ea76d19a3e..750cf50aa706 100644
--- a/library/stdarch/crates/std_detect/src/detect/macros.rs
+++ b/library/stdarch/crates/std_detect/src/detect/macros.rs
@@ -10,7 +10,7 @@ macro_rules! features {
     ) => {
         #[macro_export]
         $(#[$macro_attrs])*
-        #[allow_internal_unstable(stdsimd_internal,stdsimd)]
+        #[allow_internal_unstable(stdsimd_internal)]
         macro_rules! $macro_name {
             $(
                 ($feature_lit) => {