diff --git a/library/stdarch/crates/core_arch/src/x86/abm.rs b/library/stdarch/crates/core_arch/src/x86/abm.rs
index 8c2eccd7b36c..e6d551760043 100644
--- a/library/stdarch/crates/core_arch/src/x86/abm.rs
+++ b/library/stdarch/crates/core_arch/src/x86/abm.rs
@@ -29,7 +29,7 @@ use stdarch_test::assert_instr;
 #[target_feature(enable = "lzcnt")]
 #[cfg_attr(test, assert_instr(lzcnt))]
 #[stable(feature = "simd_x86", since = "1.27.0")]
-pub unsafe fn _lzcnt_u32(x: u32) -> u32 {
+pub fn _lzcnt_u32(x: u32) -> u32 {
     x.leading_zeros()
 }
 
diff --git a/library/stdarch/crates/core_arch/src/x86_64/abm.rs b/library/stdarch/crates/core_arch/src/x86_64/abm.rs
index dd41e7e32069..bf59cc463218 100644
--- a/library/stdarch/crates/core_arch/src/x86_64/abm.rs
+++ b/library/stdarch/crates/core_arch/src/x86_64/abm.rs
@@ -29,7 +29,7 @@ use stdarch_test::assert_instr;
 #[target_feature(enable = "lzcnt")]
 #[cfg_attr(test, assert_instr(lzcnt))]
 #[stable(feature = "simd_x86", since = "1.27.0")]
-pub unsafe fn _lzcnt_u64(x: u64) -> u64 {
+pub fn _lzcnt_u64(x: u64) -> u64 {
     x.leading_zeros() as u64
 }