diff --git a/app/controllers/site_controller.rb b/app/controllers/site_controller.rb
--- a/app/controllers/site_controller.rb
+++ b/app/controllers/site_controller.rb
@@ -19,7 +19,7 @@
       end
     end
     
-    @default_site = Site.first if !Configuration['contest.multisites']
+    @default_site = Site.first if !GraderConfiguration['contest.multisites']
     
     render :action => 'login', :layout => 'empty'
   end