diff --git a/packages-exp/performance-exp/package.json b/packages-exp/performance-exp/package.json
index 00735203453..353b50c7529 100644
--- a/packages-exp/performance-exp/package.json
+++ b/packages-exp/performance-exp/package.json
@@ -3,8 +3,9 @@
   "version": "0.0.800",
   "description": "Firebase performance for web",
   "author": "Firebase <firebase-support@google.com> (https://firebase.google.com/)",
+  "private": true,
   "main": "dist/index.cjs.js",
-  "browser": "dist/index.cjs.js",
+  "browser": "dist/index.esm.js",
   "module": "dist/index.esm.js",
   "esm2017": "dist/index.esm2017.js",
   "files": ["dist"],
diff --git a/packages-exp/performance-types-exp/package.json b/packages-exp/performance-types-exp/package.json
index 788000426cf..cd6f5271075 100644
--- a/packages-exp/performance-types-exp/package.json
+++ b/packages-exp/performance-types-exp/package.json
@@ -3,6 +3,7 @@
   "version": "0.0.800",
   "description": "@firebase/performance Types",
   "author": "Firebase <firebase-support@google.com> (https://firebase.google.com/)",
+  "private": true,
   "license": "Apache-2.0",
   "scripts": {
     "test": "tsc",