diff --git a/library/alloc/src/vec/mod.rs b/library/alloc/src/vec/mod.rs
index ba34ab6800f..1028bb981b9 100644
--- a/library/alloc/src/vec/mod.rs
+++ b/library/alloc/src/vec/mod.rs
@@ -166,7 +166,7 @@
 /// vec[0] = 7;
 /// assert_eq!(vec[0], 7);
 ///
-/// vec.extend([1, 2, 3].iter().copied());
+/// vec.extend([1, 2, 3]);
 ///
 /// for x in &vec {
 ///     println!("{x}");