diff --git a/lib/local.js b/lib/local.js
index 9e05877..f5fad2d 100644
--- a/lib/local.js
+++ b/lib/local.js
@@ -151,7 +151,7 @@ var Tunnel = function Tunnel(key, port, uniqueIdentifier, config, callback) {
   function getTunnelBinaryVersion(callback) {
     var subProcessTimeout = 3000;
 
-    runTunnelCmd([ '-version' ], subProcessTimeout, function (data, done) {
+    runTunnelCmd([ '--version' ], subProcessTimeout, function (data, done) {
       var matches = /version\s+(\d+(\.\d+)*)/.exec(data);
       var version = (matches && matches.length > 2) && matches[1];
       logger.debug('[%s] Tunnel binary: found version', new Date(), version);