diff --git a/test/delegate.test.js b/test/delegate.test.js
index 1fc8871..bc30a44 100644
--- a/test/delegate.test.js
+++ b/test/delegate.test.js
@@ -1,6 +1,6 @@
 /* eslint-env mocha */
 /* global proclaim sinon */
-import Delegate from '../main';
+import Delegate from '../main.js';
 
 const setupHelper = {};
 
diff --git a/test/scroll.test.js b/test/scroll.test.js
index e581914..f8e45ed 100644
--- a/test/scroll.test.js
+++ b/test/scroll.test.js
@@ -1,6 +1,6 @@
 /* eslint-env mocha */
 /* global proclaim sinon */
-import Delegate from '../main';
+import Delegate from '../main.js';
 
 describe("Delegate", () => {