diff --git a/README.md b/README.md
index 7f5b5dad..17714c42 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ reading the [Upgrade Guide](https://rust-random.github.io/book/update.html).
 
 ### Rust version requirements
 
-The since version 0.5, Rand requires **Rustc version 1.22 or greater**.
+Since version 0.5, Rand requires **Rustc version 1.22 or greater**.
 Rand 0.4 and 0.3 (since approx. June 2017) require Rustc version 1.15 or
 greater. Subsets of the Rand code may work with older Rust versions, but this
 is not supported.
diff --git a/src/lib.rs b/src/lib.rs
index 6b59ff98..f9d04c5a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -31,7 +31,7 @@
 //! let mut rng = rand::thread_rng();
 //! let y: f64 = rng.gen(); // generates a float between 0 and 1
 //!
-//! let nums: Vec<i32> = (1..100).collect();
+//! let mut nums: Vec<i32> = (1..100).collect();
 //! nums.shuffle(&mut rng);
 //! ```
 //!