diff --git a/src/lib.rs b/src/lib.rs
index aa3fcfc8d..876ff199d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -360,11 +360,14 @@
 #![deny(clippy::question_mark_used)]
 #![allow(non_upper_case_globals)]
 #![deny(missing_docs)]
-#![cfg_attr(not(feature = "std"), no_std)]
+#![no_std]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 
 extern crate alloc;
 
+#[cfg(feature = "std")]
+extern crate std;
+
 #[cfg(feature = "std")]
 #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
 #[doc(inline)]