diff --git a/test/util.js b/test/util.js
index 40e7b647ed..fbdf9e0f2a 100644
--- a/test/util.js
+++ b/test/util.js
@@ -19,6 +19,10 @@ suite("util", function () {
     assert.ok(util.canCompile("/test.js"));
     assert.ok(util.canCompile("/scripts/test.js"));
 
+    assert.ok(util.canCompile("test.es6"));
+    assert.ok(util.canCompile("/test.es6"));
+    assert.ok(util.canCompile("/scripts/test.es6"));
+
     assert.ok(!util.canCompile("test"));
     assert.ok(!util.canCompile("test.css"));
     assert.ok(!util.canCompile("/test.css"));