diff --git a/lib/vagrant-cachier/bucket.rb b/lib/vagrant-cachier/bucket.rb
index eeca04c..6440d87 100644
--- a/lib/vagrant-cachier/bucket.rb
+++ b/lib/vagrant-cachier/bucket.rb
@@ -15,8 +15,8 @@ module VagrantPlugins
       end
 
       def self.bucket_name
-        # TODO: Handle MultiWord bucket classes
-        self.name.split('::').last.downcase
+        class_name = self.name.split('::').last
+        class_name.scan(/[A-Z][a-z]*/).map{|x| x.downcase}.join("_")
       end
 
       def self.install(name, env, configs)