diff --git a/README.md b/README.md
index 9525797e..6c79be8a 100644
--- a/README.md
+++ b/README.md
@@ -271,7 +271,7 @@ RackTest can be configured with a set of headers like this:
 
 ```ruby
 Capybara.register_driver :rack_test do |app|
-  Capybara::RackTest::Driver.new(app, :browser => :chrome)
+  Capybara::RackTest::Driver.new(app, :headers => { 'User-Agent' => 'Capybara' })
 end
 ```