diff --git a/build.rs b/build.rs
index e9c2a66..9d3bae3 100644
--- a/build.rs
+++ b/build.rs
@@ -7,7 +7,6 @@
     feature(link_llvm_intrinsics)
 )]
 #![cfg_attr(all(feature = "alloc", not(feature = "std")), feature(alloc))]
-#![cfg_attr(feature = "nightly", feature(cfg_target_feature))]
 #![allow(unused_variables)]
 #![allow(non_snake_case)]
 #![allow(dead_code)]
diff --git a/src/lib.rs b/src/lib.rs
index cd3b583..2bf5c8a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,7 +19,6 @@
 )]
 #![cfg_attr(feature = "nightly", feature(test))]
 #![cfg_attr(all(feature = "alloc", not(feature = "std")), feature(alloc))]
-#![cfg_attr(feature = "nightly", feature(cfg_target_feature))]
 #![cfg_attr(feature = "nightly", feature(external_doc))]
 // Refuse to compile if documentation is missing, but only on nightly.
 //