diff --git a/package.json b/package.json
index 43fa7d12dc..140282ec87 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,5 @@
 {
   "name": "openproject-costs",
   "version": "0.1.0",
-  "main": "frontend/app/openproject-costs-app.js",
   "dependencies": {}
 }