diff --git a/app/scripts/controllers/mmi-controller.test.js b/app/scripts/controllers/mmi-controller.test.js
index 911ae68fc709..f8c06d62981d 100644
--- a/app/scripts/controllers/mmi-controller.test.js
+++ b/app/scripts/controllers/mmi-controller.test.js
@@ -19,6 +19,7 @@ describe('MMIController', function () {
       })),
       registerActionHandler: jest.fn(),
       publish: jest.fn(),
+      subscribe: jest.fn(),
     };
 
     mmiController = new MMIController({