diff --git a/test/extend_mongodb_tests.js b/test/extend_mongodb_tests.js
index <HASH>..<HASH> 100644
--- a/test/extend_mongodb_tests.js
+++ b/test/extend_mongodb_tests.js
@@ -175,7 +175,7 @@ describe('Extended JSON', function() {
   it('should correctly throw when passed a non string to parse', function(done) {
     // Create ExtJSON instance
     var extJSON = new ExtJSON();
-    assert.throws(() => {
+    assert.throws(function() {
       extJSON.parse({}, {strict: true})
     }, Error);
made it work for <I>.x