diff --git a/lib/puppet/provider/package/entropy.rb b/lib/puppet/provider/package/entropy.rb
index fe27f82..feab766 100644
--- a/lib/puppet/provider/package/entropy.rb
+++ b/lib/puppet/provider/package/entropy.rb
@@ -13,7 +13,7 @@ Puppet::Type.type(:package).provide :entropy, :parent => Puppet::Provider::Packa
 
   confine :has_entropy => true
   
-  defaultfor :has_entropy => true
+  defaultfor :has_entropy => :true, :osfamily => :Gentoo
 
   def self.instances
     result_format = /^(\S+)\/(\S+)-([\.\d]+(?:_?(?:a(?:lpha)?|b(?:eta)?|pre|rc|p)\d*)?(?:-r\d+)?)(?:#(\S+))?$/