diff --git a/packages/browser-stdenv/package.json b/packages/browser-stdenv/package.json
index 7bdf6ef..49d8d99 100644
--- a/packages/browser-stdenv/package.json
+++ b/packages/browser-stdenv/package.json
@@ -11,6 +11,7 @@
     "type": "git",
     "url": "https://git.syndicate-lang.org/syndicate-lang/syndicate-js"
   },
+  "main": "index.min.js",
   "author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",
   "scripts": {
     "prepare": "./build-aggregate.sh",