diff --git a/nested_projects/app/controllers/reports_controller.rb b/nested_projects/app/controllers/reports_controller.rb
index dd3ece930..bfe515778 100644
--- a/nested_projects/app/controllers/reports_controller.rb
+++ b/nested_projects/app/controllers/reports_controller.rb
@@ -61,7 +61,7 @@ class ReportsController < ApplicationController
       render :template => "reports/issue_report_details"  
     when "subproject"
       @field = "project_id"
-      @rows = @project.active_children
+      @rows = @project.descendants.active
       @data = issues_by_subproject
       @report_title = l(:field_subproject)
       render :template => "reports/issue_report_details"  
@@ -72,7 +72,7 @@ class ReportsController < ApplicationController
       @categories = @project.issue_categories
       @assignees = @project.members.collect { |m| m.user }
       @authors = @project.members.collect { |m| m.user }
-      @subprojects = @project.active_children
+      @subprojects = @project.descendants.active
       issues_by_tracker
       issues_by_version
       issues_by_priority
@@ -229,8 +229,8 @@ private
                                                   #{Issue.table_name} i, #{IssueStatus.table_name} s
                                                 where 
                                                   i.status_id=s.id 
-                                                  and i.project_id IN (#{@project.active_children.collect{|p| p.id}.join(',')})
-                                                group by s.id, s.is_closed, i.project_id") if @project.active_children.any?
+                                                  and i.project_id IN (#{@project.descendants.active.collect{|p| p.id}.join(',')})
+                                                group by s.id, s.is_closed, i.project_id") if @project.descendants.active.any?
     @issues_by_subproject ||= []
   end
 end
diff --git a/nested_projects/app/controllers/search_controller.rb b/nested_projects/app/controllers/search_controller.rb
index e6e66f05c..485d2349d 100644
--- a/nested_projects/app/controllers/search_controller.rb
+++ b/nested_projects/app/controllers/search_controller.rb
@@ -34,7 +34,7 @@ class SearchController < ApplicationController
       when 'my_projects'
         User.current.memberships.collect(&:project)
       when 'subprojects'
-        @project ? ([ @project ] + @project.active_children) : nil
+        @project ? (@project.self_and_descendants.active) : nil
       else
         @project
       end
diff --git a/nested_projects/app/helpers/search_helper.rb b/nested_projects/app/helpers/search_helper.rb
index cd96dbd3f..32ff16f67 100644
--- a/nested_projects/app/helpers/search_helper.rb
+++ b/nested_projects/app/helpers/search_helper.rb
@@ -44,7 +44,7 @@ module SearchHelper
   def project_select_tag
     options = [[l(:label_project_all), 'all']]
     options << [l(:label_my_projects), 'my_projects'] unless User.current.memberships.empty?
-    options << [l(:label_and_its_subprojects, @project.name), 'subprojects'] unless @project.nil? || @project.active_children.empty?
+    options << [l(:label_and_its_subprojects, @project.name), 'subprojects'] unless @project.nil? || @project.descendants.active.empty?
     options << [@project.name, ''] unless @project.nil?
     select_tag('scope', options_for_select(options, params[:scope].to_s)) if options.size > 1
   end
diff --git a/nested_projects/app/models/project.rb b/nested_projects/app/models/project.rb
index 56929bdf0..c4ea19d96 100644
--- a/nested_projects/app/models/project.rb
+++ b/nested_projects/app/models/project.rb
@@ -203,10 +203,6 @@ class Project < ActiveRecord::Base
     end
   end
   
-  def active_children
-    children.select {|child| child.active?}
-  end
-  
   # Returns an array of the trackers used by the project and its sub projects
   def rolled_up_trackers
     @rolled_up_trackers ||=
diff --git a/nested_projects/app/models/query.rb b/nested_projects/app/models/query.rb
index 829cda43c..5627dfd5c 100644
--- a/nested_projects/app/models/query.rb
+++ b/nested_projects/app/models/query.rb
@@ -174,8 +174,8 @@ class Query < ActiveRecord::Base
       unless @project.versions.empty?
         @available_filters["fixed_version_id"] = { :type => :list_optional, :order => 7, :values => @project.versions.sort.collect{|s| [s.name, s.id.to_s] } }
       end
-      unless @project.active_children.empty?
-        @available_filters["subproject_id"] = { :type => :list_subprojects, :order => 13, :values => @project.active_children.collect{|s| [s.name, s.id.to_s] } }
+      unless @project.descendants.active.empty?
+        @available_filters["subproject_id"] = { :type => :list_subprojects, :order => 13, :values => @project.descendants.active.collect{|s| [s.name, s.id.to_s] } }
       end
       add_custom_fields_filters(@project.all_issue_custom_fields)
     else
@@ -257,7 +257,7 @@ class Query < ActiveRecord::Base
   
   def project_statement
     project_clauses = []
-    if project && !@project.active_children.empty?
+    if project && !@project.descendants.active.empty?
       ids = [project.id]
       if has_filter?("subproject_id")
         case operator_for("subproject_id")
diff --git a/nested_projects/app/views/projects/activity.rhtml b/nested_projects/app/views/projects/activity.rhtml
index b0e536690..67c991359 100644
--- a/nested_projects/app/views/projects/activity.rhtml
+++ b/nested_projects/app/views/projects/activity.rhtml
@@ -48,7 +48,7 @@
 <p><% @activity.event_types.each do |t| %>
 <label><%= check_box_tag "show_#{t}", 1, @activity.scope.include?(t) %> <%= l("label_#{t.singularize}_plural")%></label><br />
 <% end %></p>
-<% if @project && @project.active_children.any? %>
+<% if @project && @project.descendants.active.any? %>
     <p><label><%= check_box_tag 'with_subprojects', 1, @with_subprojects %> <%=l(:label_subproject_plural)%></label></p>
     <%= hidden_field_tag 'with_subprojects', 0 %>
 <% end %>
diff --git a/nested_projects/test/unit/project_test.rb b/nested_projects/test/unit/project_test.rb
index 3821df698..6a29e96b1 100644
--- a/nested_projects/test/unit/project_test.rb
+++ b/nested_projects/test/unit/project_test.rb
@@ -60,7 +60,7 @@ class ProjectTest < Test::Unit::TestCase
     assert !user.projects.include?(@ecookbook)
     # Subproject are also archived
     assert !@ecookbook.children.empty?
-    assert @ecookbook.active_children.empty?
+    assert @ecookbook.descendants.active.empty?
   end
   
   def test_unarchive