diff --git a/src/lib.rs b/src/lib.rs
index f9a2fe6..07884f8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -20,12 +20,19 @@
 //! This version of arrayvec requires Rust 1.51 or later.
 //!
 #![doc(html_root_url="https://docs.rs/arrayvec/0.7/")]
-#![cfg_attr(not(feature="std"), no_std)]
+// no_std when std feature is disabled, OR when compiling for wasm32v1-none
+// (a bare-metal wasm target with no libstd, regardless of feature flags set
+// by the host workspace — cargo check --target wasm32v1-none unifies features
+// from the whole workspace which may include std=true).
+#![cfg_attr(
+    any(not(feature = "std"), all(target_arch = "wasm32", target_os = "none")),
+    no_std
+)]
 
 #[cfg(feature="serde")]
 extern crate serde;
 
-#[cfg(not(feature="std"))]
+#[cfg(any(not(feature = "std"), all(target_arch = "wasm32", target_os = "none")))]
 extern crate core as std;
 
 pub(crate) type LenUint = u32;