diff --git a/index.js b/index.js
index 16b844bb..4a63bd8a 100644
--- a/index.js
+++ b/index.js
@@ -17,6 +17,7 @@ exports.sync = function (x, opts) {
     
     if (!opts) opts = {};
     var isFile = opts.isFile || function (file) {
+        var obj = fs.existsSync ? fs : path;
         return path.existsSync(file) && fs.statSync(file).isFile()
     };
     var readFileSync = opts.readFileSync || fs.readFileSync;