diff --git a/lib/active_resource.rb b/lib/active_resource.rb
index ef3490e009..5432dfcc1b 100644
--- a/lib/active_resource.rb
+++ b/lib/active_resource.rb
@@ -42,5 +42,4 @@ module ActiveResource
   autoload :Collection
 end
 
-require 'active_resource/railtie' if defined? Rails
-
+require 'active_resource/railtie' if defined?(Rails.application)