diff --git a/examples/express.js b/examples/express.js
index 721ad07..c7e8ccd 100644
--- a/examples/express.js
+++ b/examples/express.js
@@ -6,21 +6,27 @@
 
 /* Note: using staging server url, remove .testing() for production
 Using .testing() will overwrite the debug flag with true */
-var LEX = require('../').testing();
+var LEX = require('letsencrypt-express').testing();
+var http = require('http');
+// NOTE: you could use the old https module if for some reason
+// you don't want to support modern browsers
+var https = require('spdy');
+var leConfDir = require('os').homedir() + '/letsencrypt/etc';
+throw new Error(
+    "You must edit the example to change the email address (and remove this error)."
+  + " Also, you'll need to remove .testing() and rm -rf '" + leConfDir + "'"
+  + " to get actual, trusted production certificates.");
 var lex = LEX.create({
-  configDir: require('os').homedir() + '/letsencrypt/etc'
+  configDir: leConfDir
 , approveRegistration: function (hostname, cb) { // leave `null` to disable automatic registration
     // Note: this is the place to check your database to get the user associated with this domain
     cb(null, {
       domains: [hostname]
-    , email: 'aj@daplie.com' // user@example.com
+    , email: 'CHANGE_ME' // user@example.com
     , agreeTos: true
     });
   }
 });
-var http = require('http');
-var https = require('spdy');
-// NOTE: you could use the old https module if for some reason you don't want to support modern browsers
 
 function redirectHttp() {
   http.createServer(LEX.createAcmeResponder(lex, function redirectHttps(req, res) {