diff --git a/src/lib.rs b/src/lib.rs
index 645f0b2..f05f04c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -67,7 +67,7 @@
 //!
 //! [`portable-atomic`]: https://crates.io/crates/portable-atomic
 
-#![cfg_attr(all(not(feature = "std"), not(test)), no_std)]
+#![cfg_attr(not(feature = "std"), no_std)]
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
 #![doc(
     html_favicon_url = "https://raw.githubusercontent.com/smol-rs/smol/master/assets/images/logo_fullsize_transparent.png"