diff --git a/lib/capybara-rails/railtie.rb b/lib/capybara-rails/railtie.rb
index 4ec502d..c01effa 100644
--- a/lib/capybara-rails/railtie.rb
+++ b/lib/capybara-rails/railtie.rb
@@ -26,7 +26,7 @@ class Railtie < ::Rails::Railtie
             exception_logger.debug(cleaned_backtrace)
           }
 
-        app.middleware.use 'ExceptionNotification::Rack'
+        app.middleware.use ExceptionNotification::Rack
       end
     end
   end