diff --git a/lib/vhost-sni-server.js b/lib/vhost-sni-server.js
index 2bc7b94..0704caf 100644
--- a/lib/vhost-sni-server.js
+++ b/lib/vhost-sni-server.js
@@ -324,11 +324,11 @@ module.exports.create = function (securePort, certsPath, vhostsdir) {
     function addSniWorkaroundCallback() {
       //SNICallback is passed the domain name, see NodeJS docs on TLS
       secureOpts.SNICallback = function (domainname, cb) {
-        if (/(^|\.)_proxyable\./.test(domainname)) {
-          // device-id-12345678._proxyable.myapp.mydomain.com => myapp.mydomain.com
-          // _proxyable.myapp.mydomain.com => myapp.mydomain.com
+        if (/(^|\.)proxyable\./.test(domainname)) {
+          // device-id-12345678.proxyable.myapp.mydomain.com => myapp.mydomain.com
+          // proxyable.myapp.mydomain.com => myapp.mydomain.com
           // TODO myapp.mydomain.com.proxyable.com => myapp.mydomain.com
-          domainname = domainname.replace(/.*\.?_proxyable\./, '');
+          domainname = domainname.replace(/.*\.?proxyable\./, '');
         }
 
         if (!secureContexts.dummy) {
@@ -374,11 +374,11 @@ module.exports.create = function (securePort, certsPath, vhostsdir) {
 
       // Get up and listening as absolutely quickly as possible
       secureServer.on('request', function (req, res) {
-        if (/(^|\.)_proxyable\./.test(req.headers.host)) {
-          // device-id-12345678._proxyable.myapp.mydomain.com => myapp.mydomain.com
-          // _proxyable.myapp.mydomain.com => myapp.mydomain.com
+        if (/(^|\.)proxyable\./.test(req.headers.host)) {
+          // device-id-12345678.proxyable.myapp.mydomain.com => myapp.mydomain.com
+          // proxyable.myapp.mydomain.com => myapp.mydomain.com
           // TODO myapp.mydomain.com.proxyable.com => myapp.mydomain.com
-          req.headers.host = req.headers.host.replace(/.*\.?_proxyable\./, '');
+          req.headers.host = req.headers.host.replace(/.*\.?proxyable\./, '');
         }
 
         loadPromise().then(function (app) {