diff --git a/toolkit/components/osfile/_PromiseWorker.jsm b/toolkit/components/osfile/_PromiseWorker.jsm
index 6945768f03e6..08a467d307a7 100644
--- a/toolkit/components/osfile/_PromiseWorker.jsm
+++ b/toolkit/components/osfile/_PromiseWorker.jsm
@@ -10,7 +10,7 @@
 this.EXPORTED_SYMBOLS = ["PromiseWorker"];
 
 // The library of promises.
-Components.utils.import("resource://gre/modules/commonjs/sdk/core/promise.js", this);
+Components.utils.import("resource://gre/modules/Promise.jsm", this);
 
 /**
  * An implementation of queues (FIFO).
diff --git a/toolkit/components/osfile/osfile_async_front.jsm b/toolkit/components/osfile/osfile_async_front.jsm
index 81263077fa7b..2bd02d6abd59 100644
--- a/toolkit/components/osfile/osfile_async_front.jsm
+++ b/toolkit/components/osfile/osfile_async_front.jsm
@@ -45,7 +45,7 @@ if (OS.Constants.Win) {
 let Type = OS.Shared.Type;
 
 // The library of promises.
-Components.utils.import("resource://gre/modules/commonjs/sdk/core/promise.js", this);
+Components.utils.import("resource://gre/modules/Promise.jsm", this);
 
 // The implementation of communications
 Components.utils.import("resource://gre/modules/osfile/_PromiseWorker.jsm", this);
diff --git a/toolkit/components/osfile/tests/mochi/main_test_osfile_async.js b/toolkit/components/osfile/tests/mochi/main_test_osfile_async.js
index e68f9d100989..dbec46232f73 100644
--- a/toolkit/components/osfile/tests/mochi/main_test_osfile_async.js
+++ b/toolkit/components/osfile/tests/mochi/main_test_osfile_async.js
@@ -1,7 +1,7 @@
 "use strict";
 
 Components.utils.import("resource://gre/modules/osfile.jsm");
-Components.utils.import("resource://gre/modules/commonjs/sdk/core/promise.js");
+Components.utils.import("resource://gre/modules/Promise.jsm");
 Components.utils.import("resource://gre/modules/Task.jsm");
 
 // The following are used to compare against a well-tested reference