diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index aa66376d5db0b3ae0e50b448c6742373db37d39c..428bd040ddb9c3a72d082fd66370b93690e8267c 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -185,7 +185,7 @@ The full set of methods that can be used in this block are as follows:
 * `assets` allows to create assets on generating a scaffold. Defaults to `true`.
 * `force_plural` allows pluralized model names. Defaults to `false`.
 * `helper` defines whether or not to generate helpers. Defaults to `true`.
-* `integration_tool` defines which integration tool to use. Defaults to `nil`.
+* `integration_tool` defines which integration tool to use to generate integration tests. Defaults to `:test_unit`.
 * `javascripts` turns on the hook for JavaScript files in generators. Used in Rails for when the `scaffold` generator is run. Defaults to `true`.
 * `javascript_engine` configures the engine to be used (for eg. coffee) when generating assets. Defaults to `nil`.
 * `orm` defines which orm to use. Defaults to `false` and will use Active Record by default.