1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstd/sync/mutex.rs b/src/libstd/sync/mutex.rs
index 130fd1d7dc8..2bf75cf1d37 100644
--- a/src/libstd/sync/mutex.rs
+++ b/src/libstd/sync/mutex.rs
@@ -85,6 +85,7 @@ use fmt;
 /// To recover from a poisoned mutex:
 ///
 /// ```
+/// # #![feature(std_misc)]
 /// use std::sync::{Arc, Mutex};
 /// use std::thread;
 ///
@@ -136,6 +137,7 @@ unsafe impl<T: Send> Sync for Mutex<T> { }
 /// # Examples
 ///
 /// ```
+/// # #![feature(std_misc)]
 /// use std::sync::{StaticMutex, MUTEX_INIT};
 ///
 /// static LOCK: StaticMutex = MUTEX_INIT;