diff --git a/app/models/photo.rb b/app/models/photo.rb
index 76b9dff..4ab83bd 100644
--- a/app/models/photo.rb
+++ b/app/models/photo.rb
@@ -4,6 +4,7 @@ class Photo < ActiveRecord::Base
   attr_protected :email_hash
   
   has_many :votes, :dependent => :destroy
+  has_many :photo_favorites, :dependent => :destroy
   
   before_create :validate_image_sanity
   before_create :hashify_email