diff --git a/src/lib.rs b/src/lib.rs
index 7fc6f1a..8abec35 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-#![cfg_attr(not(feature = "std"), no_std)]
+#![no_std]
 #![warn(
     missing_debug_implementations,
     missing_docs,
@@ -113,6 +113,8 @@
 #[cfg(not(feature = "std"))]
 extern crate alloc;
 #[cfg(feature = "std")]
+extern crate std;
+#[cfg(feature = "std")]
 extern crate std as alloc;
 
 #[cfg(feature = "serde")]