diff --git a/src/createClient.js b/src/createClient.js
index 83dc1b7..6fb1ba9 100644
--- a/src/createClient.js
+++ b/src/createClient.js
@@ -90,9 +90,12 @@ function createClient(options) {
   return client;
 
   function onConnect() {
+    var taggedHost = host;
+    if (options.forge) taggedHost += '\0FML\0';
+
     client.write('set_protocol', {
       protocolVersion: version.version,
-      serverHost: host,
+      serverHost: taggedHost,
       serverPort: port,
       nextState: 2
     });