diff --git a/src/libcore/ops/range.rs b/src/libcore/ops/range.rs
index e9c5f1d4a8bf..ddcf3addf398 100644
--- a/src/libcore/ops/range.rs
+++ b/src/libcore/ops/range.rs
@@ -702,6 +702,7 @@ impl<T: Clone> Bound<&T> {
     /// # Examples
     ///
     /// ```
+    /// #![feature(bound_cloned)]
     /// use std::ops::Bound::*;
     /// use std::ops::RangeBounds;
     ///
diff --git a/src/libcore/tests/lib.rs b/src/libcore/tests/lib.rs
index c617596aba80..7465ef4a44e2 100644
--- a/src/libcore/tests/lib.rs
+++ b/src/libcore/tests/lib.rs
@@ -1,3 +1,4 @@
+#![feature(bound_cloned)]
 #![feature(box_syntax)]
 #![feature(cell_update)]
 #![feature(core_private_bignum)]