diff --git a/lib/devices/ios/ios.js b/lib/devices/ios/ios.js
index 02d4bc1e9..a594d3589 100644
--- a/lib/devices/ios/ios.js
+++ b/lib/devices/ios/ios.js
@@ -389,7 +389,7 @@ IOS.prototype.detectTraceTemplate = function(cb) {
 IOS.prototype.detectUdid = function (cb) {
   if (this.udid !== null && this.udid === "auto") {
     logger.info("Auto-detecting iOS udid...");
-    var udidetectPath = path.resolve(__dirname, "../build/udidetect/udidetect");
+    var udidetectPath = path.resolve(__dirname, "../../../build/udidetect/udidetect");
     var udiddetectProc = exec(udidetectPath, { maxBuffer: 524288, timeout: 3000 }, function(err, stdout) {
       if (stdout && stdout.length > 2) {
         this.udid = stdout.replace("\n","");