diff --git a/app/controllers/projects/issues_controller.rb b/app/controllers/projects/issues_controller.rb
index 4612abcbae8f75c528e5f289007c1a75b5e6e8ca..27aa70a992b9e58f51b0bf3434c2f03c32345cbc 100644
--- a/app/controllers/projects/issues_controller.rb
+++ b/app/controllers/projects/issues_controller.rb
@@ -57,7 +57,7 @@ class Projects::IssuesController < Projects::ApplicationController
   def show
     @participants = @issue.participants(current_user)
     @note = @project.notes.new(noteable: @issue)
-    @notes = @issue.notes.inc_author.fresh
+    @notes = @issue.notes.inc_associations.fresh
     @noteable = @issue
 
     respond_with(@issue)
diff --git a/app/models/concerns/issuable.rb b/app/models/concerns/issuable.rb
index 4db4ffb2e79835fb234e53470f32da2c105fad6a..0e8bcc1a4ece30b363b26d6c05db5396ff6d5026 100644
--- a/app/models/concerns/issuable.rb
+++ b/app/models/concerns/issuable.rb
@@ -47,7 +47,8 @@ module Issuable
              prefix: true
 
     attr_mentionable :title, :description
-    participant :author, :assignee, :notes, :mentioned_users
+
+    participant :author, :assignee, :notes_with_associations, :mentioned_users
   end
 
   module ClassMethods
@@ -176,6 +177,10 @@ module Issuable
     self.class.to_s.underscore
   end
 
+  def notes_with_associations
+    notes.includes(:author, :project)
+  end
+
   private
 
   def filter_superceded_votes(votes, notes)
diff --git a/app/models/group.rb b/app/models/group.rb
index 9cd146bb73bf18e718beab0f34594b7ca7a50c8c..465c22d23ac85ae8305112bf9f637fac3693f336 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -64,7 +64,7 @@ class Group < Namespace
   end
 
   def owners
-    @owners ||= group_members.owners.map(&:user)
+    @owners ||= group_members.owners.includes(:user).map(&:user)
   end
 
   def add_users(user_ids, access_level, current_user = nil)
diff --git a/app/models/note.rb b/app/models/note.rb
index ee0c14598f3aca97b1a9aaecce0922fc8d7e202e..3ad9895a93593eac6b26684ae5652a24c27297bd 100644
--- a/app/models/note.rb
+++ b/app/models/note.rb
@@ -59,6 +59,7 @@ class Note < ActiveRecord::Base
   scope :fresh, ->{ order(created_at: :asc, id: :asc) }
   scope :inc_author_project, ->{ includes(:project, :author) }
   scope :inc_author, ->{ includes(:author) }
+  scope :inc_associations, ->{ includes(:author, :noteable, :updated_by) }
 
   serialize :st_diff
   before_create :set_diff, if: ->(n) { n.line_code.present? }