diff --git a/app/models/collection.rb b/app/models/collection.rb
index 3bb7de87ceb55da2bd3fbd8037722fb00042904b..d5a481f21750cc780eec290c1f1ec3319047972b 100644
--- a/app/models/collection.rb
+++ b/app/models/collection.rb
@@ -1,9 +1,9 @@
 class Collection
   include ActiveModel::Model
-  attr_accessor :id, :created_at, :name, :views, :likes,
+  attr_accessor :id, :created_at, :last_modified, :name, :description, :privacy,
                 :owner, :learning_objects
 
-  validates_presence_of :name, :created_at, :views, :likes, :owner, :learning_objects
+  validates_presence_of :name, :created_at, :owner, :learning_objects
   validates_with Validators::CollectionOwnerValidator
 
   def initialize(params={})
@@ -14,11 +14,11 @@ class Collection
 
   def defaults
     {
-        views: 0,
-        likes: 0,
         created_at: DateTime.new,
+        last_modified: DateTime.new,
         owner: User.new,
-        learning_objects: []
+        learning_objects: [],
+        privacy: 'private'
     }
   end