diff --git a/lib/rspec_api_documentation.rb b/lib/rspec_api_documentation.rb
index 7066409b..3e07da93 100644
--- a/lib/rspec_api_documentation.rb
+++ b/lib/rspec_api_documentation.rb
@@ -9,7 +9,7 @@
 module RspecApiDocumentation
   extend ActiveSupport::Autoload
 
-  require 'rspec_api_documentation/railtie' if defined?(Rails)
+  require 'rspec_api_documentation/railtie' if defined?(Rails::Railtie)
   include ActiveSupport::JSON
 
   eager_autoload do