diff --git a/e2e/fixtures/tree-shaking.skip_module.mix_ambiguous_exports/mako.config.json b/e2e/fixtures/tree-shaking.skip_module.mix_ambiguous_exports/mako.config.json
index 1b25a8c21..d2e39534c 100644
--- a/e2e/fixtures/tree-shaking.skip_module.mix_ambiguous_exports/mako.config.json
+++ b/e2e/fixtures/tree-shaking.skip_module.mix_ambiguous_exports/mako.config.json
@@ -1,3 +1,6 @@
 {
-  "optimizePackageImports": false
+  "optimizePackageImports": false,
+  "optimization": {
+    "skipModules": true
+  }
 }