diff --git a/e2e/fixtures/tree-shaking_require_esm/mako.config.json b/e2e/fixtures/tree-shaking_require_esm/mako.config.json
index a553c1a78..f24028770 100644
--- a/e2e/fixtures/tree-shaking_require_esm/mako.config.json
+++ b/e2e/fixtures/tree-shaking_require_esm/mako.config.json
@@ -2,5 +2,8 @@
   "mode": "production",
   "minify": false,
   "hmr": false,
-  "treeShake": "basic"
+  "treeShake": "basic",
+  "optimization": {
+    "skipModules": true
+  }
 }