diff --git a/src/libcollections/borrow.rs b/src/libcollections/borrow.rs
index e92f38741c9a..f3c44a84ee50 100644
--- a/src/libcollections/borrow.rs
+++ b/src/libcollections/borrow.rs
@@ -132,7 +132,7 @@ impl<T> ToOwned for T where T: Clone {
 /// ```rust
 /// use std::borrow::Cow;
 ///
-/// fn abs_all(input: &mut Cow<[int]>) {
+/// fn abs_all(input: &mut Cow<[i32]>) {
 ///     for i in 0..input.len() {
 ///         let v = input[i];
 ///         if v < 0 {