diff --git a/library/stdarch/crates/core_arch/src/lib.rs b/library/stdarch/crates/core_arch/src/lib.rs
index 4e85620045b3..e4c4df652d86 100644
--- a/library/stdarch/crates/core_arch/src/lib.rs
+++ b/library/stdarch/crates/core_arch/src/lib.rs
@@ -21,7 +21,6 @@
     sse4a_target_feature,
     riscv_target_feature,
     arm_target_feature,
-    cmpxchg16b_target_feature,
     avx512_target_feature,
     mips_target_feature,
     powerpc_target_feature,
@@ -31,7 +30,6 @@
     allow_internal_unstable,
     decl_macro,
     asm_const,
-    target_feature_11,
     inline_const,
     generic_arg_infer
 )]