diff --git a/test/fixtures/transformation/es6-arrow-functions/nested/actual.js b/test/fixtures/transformation/es6-arrow-functions/nested/actual.js
index 44bc6bd411..9b5249db87 100644
--- a/test/fixtures/transformation/es6-arrow-functions/nested/actual.js
+++ b/test/fixtures/transformation/es6-arrow-functions/nested/actual.js
@@ -1,13 +1,13 @@
 module.exports = {
-  init() {
-  return new Promise((resolve, reject) => {
-    MongoClient.connect(config.mongodb, (err, db) => {
-    if (err) {
-      return reject(err);
-    }
-    this.db = db;
-    resolve(this);
+  init: function () {
+    return new Promise((resolve, reject) => {
+      MongoClient.connect(config.mongodb, (err, db) => {
+        if (err) {
+          return reject(err);
+        }
+        this.db = db;
+        resolve(this);
+      });
     });
-  });
   }
 };