diff --git a/library/stdarch/src/lib.rs b/library/stdarch/src/lib.rs
index 6479f026d577..9d87c0f1f34f 100644
--- a/library/stdarch/src/lib.rs
+++ b/library/stdarch/src/lib.rs
@@ -66,7 +66,7 @@
 //! After verifying that a specified feature is available, use `target_feature`
 //! to enable a given feature and use the desired intrinsic.
 //!
-//! ```
+//! ```ignore
 //! # #![feature(cfg_target_feature)]
 //! # #![feature(target_feature)]
 //! # #[macro_use]