diff --git a/README.md b/README.md
index 2a037c3..001fef7 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ To use the minFraud API, create a new `\MaxMind\MinFraud` object. The constructo
 takes your MaxMind account ID, license key, and an optional `options` array as
 arguments. This object is immutable. See the API documentation for the possible options.
 
-For instance, to call the Sandbox environment instead of the minFraud 2 web service:
+For instance, to use the Sandbox web service instead of the production web service, you can provide the host option:
 
 ```php
 $mf = new MinFraud(1, 'ABCD567890', [ 'host' => 'sandbox.maxmind.com' ]);
diff --git a/src/MinFraud.php b/src/MinFraud.php
index 452abfa..1b85376 100644
--- a/src/MinFraud.php
+++ b/src/MinFraud.php
@@ -64,8 +64,9 @@ class MinFraud extends MinFraud\ServiceClient
      * * `host` - The host to use when connecting to the web service.
      *   By default, the client connects to the production host. However,
      *   during testing and development, you can set this option to
-     *   'sandbox.maxmind.com' to use the sandbox host. The sandbox host
-     *   allows you to experiment with the API without affecting your production data.
+     *   'sandbox.maxmind.com' to use the Sandbox environment's host. The
+     *   sandbox allows you to experiment with the API without affecting your
+     *   production data.
      * * `userAgent` - The prefix for the User-Agent header to use in the
      *   request.
      * * `caBundle` - The bundle of CA root certificates to use in the request.