diff --git a/browser/components/translation/test/browser_translation_exceptions.js b/browser/components/translation/test/browser_translation_exceptions.js
index d0c7ba4551a..30e3ced4087 100644
--- a/browser/components/translation/test/browser_translation_exceptions.js
+++ b/browser/components/translation/test/browser_translation_exceptions.js
@@ -6,7 +6,8 @@
 
 let tmp = {};
 Cu.import("resource:///modules/translation/Translation.jsm", tmp);
-let {Translation} = tmp;
+Cu.import("resource://gre/modules/Promise.jsm", tmp);
+let {Translation, Promise} = tmp;
 
 const kLanguagesPref = "browser.translation.neverForLanguages";
 const kShowUIPref = "browser.translation.ui.show";
diff --git a/toolkit/mozapps/extensions/test/browser/browser_cancelCompatCheck.js b/toolkit/mozapps/extensions/test/browser/browser_cancelCompatCheck.js
index 35e57e53f69..1799adcdda0 100644
--- a/toolkit/mozapps/extensions/test/browser/browser_cancelCompatCheck.js
+++ b/toolkit/mozapps/extensions/test/browser/browser_cancelCompatCheck.js
@@ -14,6 +14,7 @@ const PREF_METADATA_LASTUPDATE        = "extensions.getAddons.cache.lastUpdate";
 
 let repo = {};
 Components.utils.import("resource://gre/modules/addons/AddonRepository.jsm", repo);
+Components.utils.import("resource://gre/modules/Promise.jsm", this);
 
 /**
  * Test add-ons: