diff --git a/lib/puppet/parser/resource/param.rb b/lib/puppet/parser/resource/param.rb
index af2d98fe8..c28322337 100644
--- a/lib/puppet/parser/resource/param.rb
+++ b/lib/puppet/parser/resource/param.rb
@@ -1,27 +1,27 @@
 require 'puppet/file_collection/lookup'
 require 'puppet/parser/yaml_trimmer'
 
 # The parameters we stick in Resources.
 class Puppet::Parser::Resource::Param
   attr_accessor :name, :value, :source, :add
   include Puppet::Util
   include Puppet::Util::Errors
   include Puppet::Util::MethodHelper
 
   include Puppet::FileCollection::Lookup
   include Puppet::Parser::YamlTrimmer
 
   def initialize(hash)
     set_options(hash)
-    requiredopts(:name, :value, :source)
+    requiredopts(:name, :value)
     @name = symbolize(@name)
   end
 
   def line_to_i
     line ? Integer(line) : nil
   end
 
   def to_s
     "#{self.name} => #{self.value}"
   end
 end