diff --git a/src/entrypoints/recorder.ts b/src/entrypoints/recorder.ts
index 601f66b65..5376dc8db 100644
--- a/src/entrypoints/recorder.ts
+++ b/src/entrypoints/recorder.ts
@@ -507,7 +507,7 @@ function initFetchObserver(
                 }
 
                 after = win.performance.now()
-                res = await originalFetch(url, init)
+                res = await originalFetch(req)
                 before = win.performance.now()
 
                 const responseHeaders: Headers = {}