diff --git a/packages/service-utils/src/cf-worker/usageV2.ts b/packages/service-utils/src/cf-worker/usageV2.ts
index 36209ba37dc..4063cde50c3 100644
--- a/packages/service-utils/src/cf-worker/usageV2.ts
+++ b/packages/service-utils/src/cf-worker/usageV2.ts
@@ -1,5 +1,4 @@
-import type { Request } from "@cloudflare/workers-types";
-import type { CoreAuthInput } from "src/core/types.js";
+import type { CoreAuthInput } from "../core/types.js";
 import type {
   ClientUsageV2Event,
   UsageV2Event,
@@ -34,7 +33,7 @@ export async function sendUsageV2Events<T extends UsageV2Options>(
   // Forward headers from the origin request.
   // Determine endpoint and auth header based on provided credentials.
   let url: string;
-  const headers = new Headers(Object.fromEntries(authInput.req.headers));
+  const headers = new Headers(authInput.req.headers);
   headers.set("Content-Type", "application/json");
   if (serviceKey) {
     // If a service key is provided, call the non-public usage endpoint.