diff --git a/app/controllers/pages_controller.rb b/app/controllers/pages_controller.rb
index 923e1225..0eebc452 100644
--- a/app/controllers/pages_controller.rb
+++ b/app/controllers/pages_controller.rb
@@ -31,7 +31,7 @@ def robots
     unless site.crawling_permitted?
       text << "Disallow: /"
     end
-    render :text => text.join("\n"), :content_type => 'text/plain'
+    render :plain => text.join("\n"), :content_type => 'text/plain'
   end
 
   def subscriber_verification