diff --git a/dsp/src/lib.rs b/dsp/src/lib.rs
index 581f585..ac91124 100644
--- a/dsp/src/lib.rs
+++ b/dsp/src/lib.rs
@@ -1,4 +1,5 @@
 #![cfg_attr(not(test), no_std)]
+#![cfg_attr(feature = "nightly", feature(asm, core_intrinsics))]
 
 mod tools;
 pub use tools::*;
diff --git a/dsp/src/tools.rs b/dsp/src/tools.rs
index 45dd66f..378734f 100644
--- a/dsp/src/tools.rs
+++ b/dsp/src/tools.rs
@@ -1,5 +1,3 @@
-#![cfg_attr(feature = "nightly", feature(asm, core_intrinsics))]
-
 use core::ops::{Add, Mul, Neg};
 
 pub fn abs<T>(x: T) -> T