diff --git a/config.ru b/config.ru
index a07dd14..0c274dc 100755
--- a/config.ru
+++ b/config.ru
@@ -13,12 +13,12 @@ end
 
 map '/headers' do
   headers = proc do |env|
-    [200, { "Content-Type" => "text/html" }, [
+    [200, { "Content-Type" => "text/plain" }, [
       env.select {|key,val| key.start_with? 'HTTP_'}
       .collect {|key, val| [key.sub(/^HTTP_/, ''), val]}
-      .collect {|key, val| CGI::escapeHTML "#{key}: #{val}"}
+      .collect {|key, val| "#{key}: #{val}"}
       .sort
-      .join("<br/>\n")
+      .join("\n")
     ]]
   end
   run headers