diff --git a/lib/cache/memory-cache-store.js b/lib/cache/memory-cache-store.js
index 0ba4f42034c..a7a379a11bf 100644
--- a/lib/cache/memory-cache-store.js
+++ b/lib/cache/memory-cache-store.js
@@ -94,6 +94,10 @@ class MemoryCacheStore {
     const store = this
     const body = []
 
+    // TODO (fix): Make sure user can't modify...
+    // key = structuredClone(key)
+    // opts = structuredClone(opts)
+
     return new Writable({
       write (chunk, encoding, callback) {
         if (typeof chunk === 'string') {