diff --git a/src/util/util/cdn.ts b/src/util/util/cdn.ts
index 01f03fc19..fe4781b9d 100644
--- a/src/util/util/cdn.ts
+++ b/src/util/util/cdn.ts
@@ -42,7 +42,7 @@ export async function uploadFile(
 				...form.getHeaders(),
 			},
 			method: "POST",
-			body: form,
+			body: form.getBuffer(),
 		},
 	);
 	const result = (await response.json()) as Attachment;