diff --git a/webpack.config.js b/webpack.config.js
index e6f52ef..0cce7d6 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -18,6 +18,6 @@ module.exports = {
             dev: false,
             onBuildEnd: ['node --nolazy make-runtime-snapshot']
         }),
-        new webpack.IgnorePlugin(/\.\/core\/index/)
+        new webpack.IgnorePlugin(/\@screeps\/core/)
     ]
-};
\ No newline at end of file
+};