diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index bd01271ec150f..439a39b8276a2 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -1357,14 +1357,11 @@ impl<T> [T] {
     ///
     /// ```
     /// let mut v = [1, 0, 3, 0, 5, 6];
-    /// // scoped to restrict the lifetime of the borrows
-    /// {
-    ///     let (left, right) = v.split_at_mut(2);
-    ///     assert_eq!(left, [1, 0]);
-    ///     assert_eq!(right, [3, 0, 5, 6]);
-    ///     left[1] = 2;
-    ///     right[1] = 4;
-    /// }
+    /// let (left, right) = v.split_at_mut(2);
+    /// assert_eq!(left, [1, 0]);
+    /// assert_eq!(right, [3, 0, 5, 6]);
+    /// left[1] = 2;
+    /// right[1] = 4;
     /// assert_eq!(v, [1, 2, 3, 4, 5, 6]);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]