diff --git a/src/libcore/option.rs b/src/libcore/option.rs
index a539ef81db8..d1bb65d2290 100644
--- a/src/libcore/option.rs
+++ b/src/libcore/option.rs
@@ -541,7 +541,7 @@ impl<T> Option<T> {
     /// ```
     /// let mut x = Some(4);
     /// match x.iter_mut().next() {
-    ///     Some(&mut ref mut v) => *v = 42,
+    ///     Some(v) => *v = 42,
     ///     None => {},
     /// }
     /// assert_eq!(x, Some(42));
diff --git a/src/libcore/result.rs b/src/libcore/result.rs
index e9a67196751..fe0fdb5baa5 100644
--- a/src/libcore/result.rs
+++ b/src/libcore/result.rs
@@ -538,7 +538,7 @@ impl<T, E> Result<T, E> {
     /// ```
     /// let mut x: Result<u32, &str> = Ok(7);
     /// match x.iter_mut().next() {
-    ///     Some(&mut ref mut x) => *x = 40,
+    ///     Some(v) => *v = 40,
     ///     None => {},
     /// }
     /// assert_eq!(x, Ok(40));