diff --git a/app/models/note.rb b/app/models/note.rb
index a99d428b02d..913a8c00337 100644
--- a/app/models/note.rb
+++ b/app/models/note.rb
@@ -360,6 +360,10 @@ class Note < ActiveRecord::Base
     create_new_cross_references!(project, author)
   end
 
+  def system?
+    read_attribute(:system)
+  end
+
   def editable?
     !read_attribute(:system)
   end
diff --git a/doc/api/notes.md b/doc/api/notes.md
index ee2f9fa0eac..c683cb883d4 100644
--- a/doc/api/notes.md
+++ b/doc/api/notes.md
@@ -31,7 +31,10 @@ Parameters:
       "state": "active",
       "created_at": "2013-09-30T13:46:01Z"
     },
-    "created_at": "2013-10-02T09:22:45Z"
+    "created_at": "2013-10-02T09:22:45Z",
+    "system": true,
+    "upvote": false,
+    "downvote": false
   },
   {
     "id": 305,
@@ -45,7 +48,10 @@ Parameters:
       "state": "active",
       "created_at": "2013-09-30T13:46:01Z"
     },
-    "created_at": "2013-10-02T09:56:03Z"
+    "created_at": "2013-10-02T09:56:03Z",
+    "system": false,
+    "upvote": false,
+    "downvote": false
   }
 ]
 ```
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index b5556682449..09d231af41b 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -205,6 +205,9 @@ module API
       expose :attachment_identifier, as: :attachment
       expose :author, using: Entities::UserBasic
       expose :created_at
+      expose :system?, as: :system
+      expose :upvote?, as: :upvote
+      expose :downvote?, as: :downvote
     end
 
     class MRNote < Grape::Entity