diff --git a/src/Servers/H2OServer/h2o.conf b/src/Servers/H2OServer/h2o.conf
index 113e702..8b47c58 100644
--- a/src/Servers/H2OServer/h2o.conf
+++ b/src/Servers/H2OServer/h2o.conf
@@ -1,6 +1,10 @@
 listen: 8080
+
 hosts:
   default:
     paths:
       /:
-        file.dir: /var/www
+        mruby.handler: |
+          Proc.new do |env|
+            [200, { "content-type" => "text/plain" }, ["OK"]]
+          end