diff --git a/extensions/bluebubbles/src/attachments.ts b/extensions/bluebubbles/src/attachments.ts
index 31399ba70b..e6d66712e7 100644
--- a/extensions/bluebubbles/src/attachments.ts
+++ b/extensions/bluebubbles/src/attachments.ts
@@ -7,6 +7,7 @@ import { getCachedBlueBubblesPrivateApiStatus } from "./probe.js";
 import { extractBlueBubblesMessageId, resolveBlueBubblesSendTarget } from "./send-helpers.js";
 import { resolveChatGuidForTarget } from "./send.js";
 import {
+  blueBubblesFetchWithTimeout,
   buildBlueBubblesApiUrl,
   type BlueBubblesAttachment,
   type BlueBubblesSendTarget,
diff --git a/extensions/bluebubbles/src/multipart.ts b/extensions/bluebubbles/src/multipart.ts
index c3cf298338..851cca016b 100644
--- a/extensions/bluebubbles/src/multipart.ts
+++ b/extensions/bluebubbles/src/multipart.ts
@@ -17,7 +17,7 @@ export async function postMultipartFormData(params: {
   parts: Uint8Array[];
   timeoutMs: number;
 }): Promise<Response> {
-  const body = concatUint8Arrays(params.parts);
+  const body = Buffer.from(concatUint8Arrays(params.parts));
   return await blueBubblesFetchWithTimeout(
     params.url,
     {