diff --git a/lib/fs.js b/lib/fs.js
index 3a5017b..7ca3d30 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -1,3 +1,4 @@
+var pathLib = require('path');
 var fs = require('fs');
 var Q = require('q');
 
@@ -5,9 +6,14 @@ var Q = require('q');
 // => bool
 module.exports.exists = function exists(path) {
     return Q.ncall(function exists(cb) {
-        fs.exists(path, function (exists) {
+        if (fs.exists) {
+            fs.exists(path, then);
+        } else {
+            pathLib.exists(path, then)
+        }
+        function then(exists) {
             cb(null, exists);
-        });
+        }
     });
 }