diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [![](http://meritbadge.herokuapp.com/bincode)](https://crates.io/crates/bincode)
 [![](https://img.shields.io/badge/license-MIT-blue.svg)](http://opensource.org/licenses/MIT)
 
-A compact encoder / decoder pair that uses an binary zero-fluff encoding scheme.
+A compact encoder / decoder pair that uses a binary zero-fluff encoding scheme.
 The size of the encoded object will be the same or smaller than the size that
 the object takes up in memory in a running Rust program.