diff --git a/vendor/plugins/redmine_collapse/app/views/left_menu/_projects.rhtml b/vendor/plugins/redmine_collapse/app/views/left_menu/_projects.rhtml
index 6d46516..8f9ce7e 100644
--- a/vendor/plugins/redmine_collapse/app/views/left_menu/_projects.rhtml
+++ b/vendor/plugins/redmine_collapse/app/views/left_menu/_projects.rhtml
@@ -1,5 +1,5 @@
 <h3><%= l(:label_project_plural) %></h3>
-<% user_projects_by_root = User.current.projects.find(:all, :include => :parent).group_by(&:root) %>
+<% user_projects_by_root = User.current.projects.find(:all).group_by(&:root) %>
 <div id="projects">
     <ul>
         <% user_projects_by_root.keys.sort.each do |root| %>