diff --git a/en/src/collections/vector.md b/en/src/collections/vector.md
index 63a2594..ea16799 100644
--- a/en/src/collections/vector.md
+++ b/en/src/collections/vector.md
@@ -111,9 +111,9 @@ fn main() {
 
 
 ### Slicing
-A Vec can be mutable. On the other hand, slices are read-only objects. To get a slice, use `&`. 
+Immutable or mutable slices of Vecs can be taken, using `&` or `&mut, respectively.
 
-In Rust, it’s more common to pass slices as arguments rather than vectors when you just want to provide read access. The same goes for `String` and `&str`.
+In Rust, it’s more common to pass immutable slices as arguments rather than vectors when you just want to provide read access. The same goes for `String` and `&str`.
 
 5. 🌟🌟
 ```rust,editable
@@ -129,14 +129,16 @@ fn main() {
     
     assert_eq!(slice1, slice2);
     
-    // Slices are read only
+    // Slices can also be mutable, in which
+    // case mutating them will mutate the underlying Vec
     // Note: slice and &Vec are different
     let vec_ref: &mut Vec<i32> = &mut v;
     (*vec_ref).push(4);
     let slice3 = &mut v[0..3];
-    slice3.push(4);
+    slice3[3] = 42;
 
-    assert_eq!(slice3, &[1, 2, 3, 4]);
+    assert_eq!(slice3, &[1, 2, 3, 42]);
+    assert_eq!(v, &[1, 2, 3, 42]);
 
     println!("Success!");
 }