1 files changed, 4 insertions, 3 deletions
diff --git a/lib/fs/index.js b/lib/fs/index.js
index 1961b07..7b8fc46 100644
--- a/lib/fs/index.js
+++ b/lib/fs/index.js
@@ -1,9 +1,10 @@
-var Q = require('q');
 var _ = require('lodash');
 var path = require('path');
 var Buffer = require('buffer').Buffer;
 var destroy = require('destroy');
 
+var Promise = require('../utils/promise');
+
 /*
 A filesystem is an interface to read/write files
 GitBook can works with a virtual filesystem, for example in the browser.
@@ -73,7 +74,7 @@ FS.prototype.listAllFiles = function(folder) {
                     });
                 }
             });
-        }, Q([]));
+        }, Promise([]));
     });
 };
 
@@ -88,7 +89,7 @@ FS.prototype.readAsString = function(filename) {
 // Write a stream to a file and returns a promise
 FS.prototype.writeStream = function(filename, stream) {
     var bufs = [];
-    var d = Q.defer();
+    var d = Promise.defer();
 
     var cleanup = function() {
         destroy(stream);