diff --git a/lib/utils.js b/lib/utils.js
index 5efd26ca5..25d786573 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -44,7 +44,7 @@ catch (e) {
  */
 
 exports.modulePaths = function (paths, callback) {
-    async.concat(paths, function (p, cb) {
+    async.concatSeries(paths, function (p, cb) {
         fs.stat(p, function (err, stats) {
             if (err) {
                 return cb(err);