diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index 1b0c992ba09..32ead78f6cd 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -150,6 +150,8 @@
 //! on the return value to catch any possible errors:
 //!
 //! ```
+//! use std::io;
+//!
 //! let mut input = String::new();
 //!
 //! io::stdin().read_line(&mut input).unwrap();