diff --git a/Cargo.toml b/Cargo.toml
index df17afe..2c13cca 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,6 @@ categories = ["cryptography"]
 [features]
 default = []
 # `std` feature enables an `Error` impl for `CoseError`
-std = []
 
 [dependencies]
 ciborium = { version = "^0.2.1", default-features = false }
diff --git a/README.md b/README.md
index 5fb69b6..ea0de90 100644
--- a/README.md
+++ b/README.md
@@ -13,9 +13,6 @@ example](examples/signature.rs) for documentation on how to use the code.
 
 **This repo is under construction** and so details of the API and the code may change without warning.
 
-## Features
-
-The `std` feature of the crate enables an implementation of `std::error::Error` for `CoseError`.
 
 ## `no_std` Support
 
diff --git a/src/common/mod.rs b/src/common/mod.rs
index 629b076..2144c42 100644
--- a/src/common/mod.rs
+++ b/src/common/mod.rs
@@ -95,8 +95,7 @@ impl core::fmt::Display for CoseError {
     }
 }
 
-#[cfg(feature = "std")]
-impl std::error::Error for CoseError {}
+impl core::error::Error for CoseError {}
 
 impl CoseError {
     fn fmt_msg(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {