diff --git a/src/package/index.js b/src/package/index.js
index 9fef037..533f983 100644
--- a/src/package/index.js
+++ b/src/package/index.js
@@ -182,7 +182,6 @@ class Package {
     const json = copy(this.pkgjson)
 
     delete json.type
-    delete json.main
     json.browser = {}
     json.exports = {}
     const _join = (...args) => './' + join(...args)
diff --git a/test/fixtures/pkg-kitchensink/output-notests/package.json b/test/fixtures/pkg-kitchensink/output-notests/package.json
index e1b70af..3f3ffbc 100644
--- a/test/fixtures/pkg-kitchensink/output-notests/package.json
+++ b/test/fixtures/pkg-kitchensink/output-notests/package.json
@@ -2,6 +2,7 @@
   "name": "pkg-kitchensink",
   "version": "0.0.0",
   "description": "",
+  "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
diff --git a/test/fixtures/pkg-kitchensink/output-tests/package.json b/test/fixtures/pkg-kitchensink/output-tests/package.json
index e1b70af..3f3ffbc 100644
--- a/test/fixtures/pkg-kitchensink/output-tests/package.json
+++ b/test/fixtures/pkg-kitchensink/output-tests/package.json
@@ -2,6 +2,7 @@
   "name": "pkg-kitchensink",
   "version": "0.0.0",
   "description": "",
+  "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },