diff --git a/frontend/package.json b/frontend/package.json
index aef6e9287..45ce12717 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -30,7 +30,7 @@
     "sync-assets": "node sync-assets.js && rsync -av ./dist/mempool/browser/en-US/resources ./dist/mempool/browser/resources",
     "sync-assets-dev": "node sync-assets.js dev",
     "generate-config": "node generate-config.js",
-    "build-mempool-js": "tsc | browserify -p tinyify ./node_modules/@mempool/mempool-js/lib/index.js -o ./dist/mempool/browser/en-US/mempool.js",
+    "build-mempool-js": "tsc | browserify -p tinyify ./node_modules/@mempool/mempool-js/lib/index.js --standalone mempoolJS > ./dist/mempool/browser/en-US/mempool.js",
     "test": "ng test",
     "lint": "ng lint",
     "e2e": "ng e2e",