Deprecation warning from Capybara

Question

I am upgrading from rails 3.2.19 to rails 4.1.5, using rspec-rails 2.14.0.rc1 and capybara 2.4.1. All tests pass, and I only have one deprecation warning left:

Answer 1

Works perfect for me:

page.execute_script('window.confirm = function() { return true }')