diff --git a/railties/lib/generators/base.rb b/railties/lib/generators/base.rb
index 65bf74f12fe5e143672a05383e442ec5036f5faa..069c25f94a616f48a1991cf381ab4d00b318aa0b 100644
--- a/railties/lib/generators/base.rb
+++ b/railties/lib/generators/base.rb
@@ -187,7 +187,7 @@ def self.remove_hook_for(*names)
 
       # Make class option aware of Rails::Generators.options and Rails::Generators.aliases.
       #
-      def self.class_option(name, options) #:nodoc:
+      def self.class_option(name, options={}) #:nodoc:
         options[:desc]    = "Indicates when to generate #{name.to_s.humanize.downcase}" unless options.key?(:desc)
         options[:aliases] = Rails::Generators.aliases[name]  unless options.key?(:aliases)
         options[:default] = Rails::Generators.options[name] unless options.key?(:default)