diff --git a/serde/src/lib.rs b/serde/src/lib.rs
index 1d9e6bc12..43ae06763 100644
--- a/serde/src/lib.rs
+++ b/serde/src/lib.rs
@@ -105,7 +105,7 @@
 // discussion of these features please refer to this issue:
 //
 //    https://github.com/serde-rs/serde/issues/812
-#![cfg_attr(feature = "unstable", feature(error_in_core, never_type))]
+#![cfg_attr(feature = "unstable", feature(never_type))]
 #![allow(unknown_lints, bare_trait_objects, deprecated)]
 // Ignored clippy and clippy_pedantic lints
 #![allow(