diff --git a/README.md b/README.md
index d9c6e67..4b19325 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Matcha is available on npm.
 
 ## Writing Async Benchmarks
 
-Though suites/benches are executed serially, the benches themselves can be asyncronous. Furthermore, suites ran with
+Though suites/benches are executed serially, the benches themselves can be asynchronous. Furthermore, suites ran with
 the matcha command line runner have a number of globals to simplify bench definitions. Take the following code, for example:
 
 ```js
diff --git a/lib/matcha/bench.js b/lib/matcha/bench.js
index b2618fb..c4f6c0d 100644
--- a/lib/matcha/bench.js
+++ b/lib/matcha/bench.js
@@ -159,7 +159,7 @@ function doSync (fn, iterations, concurrency, next) {
 /*!
  * doAsync (fn, iterations, next)
  *
- * Run an asyncronous bench function
+ * Run an asynchronous bench function
  * a set number of iterations.
  *
  * @param {Function} bench function