diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 344b54040..fc3d6cd61 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1500,10 +1500,10 @@ module ApplicationHelper
   end
 
   def render_dynamic_nav
-    home_link = link_to l(:field_homepage), Setting.forge_domain.nil? ? nil : "http://"+Setting.forge_domain+":3000"
-    course_all_course_link = link_to l(:label_course_all), {:controller => 'projects', :action => 'course', :project_type => 1,}
+    home_link = link_to l(:field_homepage), {:controller => 'welcome', :action => 'index',:host => Setting.forge_domain}
+    course_all_course_link = link_to l(:label_course_all), {:controller => 'projects', :action => 'course', :project_type => 1}
     course_teacher_all_link = link_to l(:label_teacher_all), {:controller => 'users', :action => 'index', :role => 'teacher'}
-    courses_link = link_to l(:label_course_practice), {:host=>Setting.course_domain}
+    courses_link = link_to l(:label_course_practice), {:controller => 'projects', :action => 'course', :project_type => 1, :host=>Setting.course_domain}
     projects_link = link_to l(:label_project_deposit), {:controller => 'projects', :action => 'index', :project_type => 0, :host => Setting.project_domain}
     users_link = link_to l(:label_software_user), {:controller => 'users', :action => 'index'}
     contest_link = link_to l(:label_contest_innovate), {:controller => 'bids', :action => 'contest', :project_type => 1, :host=>Setting.contest_domain}