diff --git a/src/libcore/result.rs b/src/libcore/result.rs
index ea064ca5c39fe..db5bffced10cc 100644
--- a/src/libcore/result.rs
+++ b/src/libcore/result.rs
@@ -1060,7 +1060,7 @@ unsafe impl<'a, A> TrustedLen for IterMut<'a, A> {}
 /// [`Result`]: enum.Result.html
 /// [`into_iter`]: ../iter/trait.IntoIterator.html#tymethod.into_iter
 /// [`IntoIterator`]: ../iter/trait.IntoIterator.html
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct IntoIter<T> { inner: Option<T> }