diff --git a/package.json b/package.json
index 33bfd1aab4..633a6517ee 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "6to5-runtime": "./bin/6to5-runtime"
   },
   "browser": {
+    "./lib/6to5/index.js": "./lib/6to5/browser.js",
     "./lib/6to5/register.js": "./lib/6to5/register-browser.js"
   },
   "keywords": [