diff --git a/lib/capybara/spec/session/click_button_spec.rb b/lib/capybara/spec/session/click_button_spec.rb
index 29108112..cf2d5fd3 100644
--- a/lib/capybara/spec/session/click_button_spec.rb
+++ b/lib/capybara/spec/session/click_button_spec.rb
@@ -63,7 +63,7 @@ Capybara::SpecHelper.spec '#click_button' do
       end
 
       it "should serialise and submit color fields" do
-        @results['html5_color'].should == '#FFFFFF'
+        @results['html5_color'].upcase.should == '#FFFFFF'
       end
     end