diff --git a/app/models/user_role.rb b/app/models/user_role.rb
index 6bc7435ae..4f80f1952 100644
--- a/app/models/user_role.rb
+++ b/app/models/user_role.rb
@@ -1,5 +1,6 @@
 class UserRole < ActiveRecord::Base
   belongs_to :user
+  belongs_to :granter, :class_name => "User"
 
   ALL_ROLES = %w(administrator moderator).freeze
 
diff --git a/test/factories/user_role.rb b/test/factories/user_role.rb
new file mode 100644
index 000000000..0eea25cee
--- /dev/null
+++ b/test/factories/user_role.rb
@@ -0,0 +1,6 @@
+FactoryGirl.define do
+  factory :user_role do
+    user
+    association :granter, :factory => :user
+  end
+end