diff --git a/lib/capybara/spec/session/node_spec.rb b/lib/capybara/spec/session/node_spec.rb
index c0fa138c6..b2ae26ca8 100644
--- a/lib/capybara/spec/session/node_spec.rb
+++ b/lib/capybara/spec/session/node_spec.rb
@@ -686,7 +686,7 @@
       @session.visit('/with_js')
       target = @session.find('//div[@id="drop_html5"]')
       target.drop(
-        Pathname.new with_os_path_separators(File.expand_path('../fixtures/capybara.jpg', File.dirname(__FILE__)))
+        Pathname.new(with_os_path_separators(File.expand_path('../fixtures/capybara.jpg', File.dirname(__FILE__))))
       )
       expect(@session).to have_xpath('//div[contains(., "HTML5 Dropped file: capybara.jpg")]')
     end