diff --git a/packages/rapier3d/package.json b/packages/rapier3d/package.json
index e6cf7635..55fcf404 100644
--- a/packages/rapier3d/package.json
+++ b/packages/rapier3d/package.json
@@ -51,7 +51,7 @@
       "^.+\\.(t|j)s$": "ts-jest"
     },
     "moduleNameMapper": {
-      "@gg-web-engine": "<rootDir>/node_modules/@gg-web-engine/dist/@gg-web-engine.min.js"
+      "@gg-web-engine/core": "<rootDir>/../core/src/index.ts"
     },
     "preset": "ts-jest/presets/default",
     "collectCoverageFrom": [