diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 06312a66d..403f4a5ff 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -79,7 +79,7 @@ class ProjectsController < ApplicationController
   def show
     @custom_values = @project.custom_values.find(:all, :include => :custom_field)
     @members = @project.members.find(:all, :include => [:user, :role])
-    @subprojects = @project.children if @project.children_count > 0
+    @subprojects = @project.children if @project.children.size > 0
     @news = @project.news.find(:all, :limit => 5, :include => [ :author, :project ], :order => "news.created_on DESC")
     @trackers = Tracker.find(:all)
     @open_issues_by_tracker = Issue.count(:group => :tracker, :joins => "INNER JOIN issue_statuses ON issue_statuses.id = issues.status_id", :conditions => ["project_id=? and issue_statuses.is_closed=?", @project.id, false])
diff --git a/app/models/project.rb b/app/models/project.rb
index 7db061a62..e36100dcf 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -65,6 +65,6 @@ class Project < ActiveRecord::Base
 protected
   def validate
     errors.add(parent_id, " must be a root project") if parent and parent.parent
-    errors.add_to_base("A project with subprojects can't be a subproject") if parent and projects_count > 0
+    errors.add_to_base("A project with subprojects can't be a subproject") if parent and children.size > 0
   end
 end
diff --git a/app/views/admin/projects.rhtml b/app/views/admin/projects.rhtml
index b30cf2af5..cf7c06070 100644
--- a/app/views/admin/projects.rhtml
+++ b/app/views/admin/projects.rhtml
@@ -19,7 +19,7 @@
 	<td><%= link_to project.name, :controller => 'projects', :action => 'settings', :id => project %>
 	<td><%=h project.description %>
 	<td align="center"><%= image_tag 'true.png' if project.is_public? %>
-	<td align="center"><%= project.children_count %>
+	<td align="center"><%= project.children.size %>
 	<td align="center"><%= format_date(project.created_on) %>
   <td align="center">
     <%= button_to l(:button_delete), { :controller => 'projects', :action => 'destroy', :id => project }, :class => "button-small" %>