1 files changed, 2 insertions, 4 deletions
diff --git a/src/doc/intro.md b/src/doc/intro.md
index 4d1eb1b31a7..886528e8672 100644
--- a/src/doc/intro.md
+++ b/src/doc/intro.md
@@ -297,8 +297,7 @@ an atomically reference counted box ("A.R.C." == "atomically reference counted")
 Here's some code:
 
 ```
-extern crate sync;
-use sync::Arc;
+use std::sync::Arc;
 
 fn main() {
     let numbers = vec![1,2,3];
@@ -344,8 +343,7 @@ Let's take the same example yet again,
 and modify it to mutate the shared state:
 
 ```
-extern crate sync;
-use sync::{Arc, Mutex};
+use std::sync::{Arc, Mutex};
 
 fn main() {
     let numbers = vec![1,2,3];