diff --git a/lib/puppet/interface/action_builder.rb b/lib/puppet/interface/action_builder.rb
index 777fcaf85..e76fb1c6e 100644
--- a/lib/puppet/interface/action_builder.rb
+++ b/lib/puppet/interface/action_builder.rb
@@ -1,29 +1,30 @@
 require 'puppet/interface'
+require 'puppet/interface/action'
 
 class Puppet::Interface::ActionBuilder
   attr_reader :action
 
   def self.build(interface, name, &block)
     name = name.to_s
     raise "Action '#{name}' must specify a block" unless block
     builder = new(interface, name, &block)
     builder.action
   end
 
   def initialize(interface, name, &block)
     @interface = interface
     @action = Puppet::Interface::Action.new(interface, name)
     instance_eval(&block)
   end
 
   # Ideally the method we're defining here would be added to the action, and a
   # method on the interface would defer to it
   def invoke(&block)
     raise "Invoke called on an ActionBuilder with no corresponding Action" unless @action
     if @interface.is_a?(Class)
       @interface.define_method(@action.name, &block)
     else
       @interface.meta_def(@action.name, &block)
     end
   end
 end