diff --git a/src/backend/extension/plasmo.ts b/src/backend/extension/plasmo.ts
index 4a7aaad3..14a5481f 100644
--- a/src/backend/extension/plasmo.ts
+++ b/src/backend/extension/plasmo.ts
@@ -15,25 +15,16 @@ export type ExtensionHelloResponse = ExtensionBaseResponse<{
   hasPermission: boolean;
 }>;
 
-export type ExtensionMakeRequestBody =
-  | {
-      bodyType: "string";
-      value: string;
-    }
-  | {
-      bodyType: "FormData" | "URLSearchParams" | "object";
-      value: Record<string, any>;
-    };
-
-export type ExtensionMakeRequestBodyType = ExtensionMakeRequestBody["bodyType"];
-
 export interface ExtensionMakeRequest extends ExtensionBaseRequest {
   url: string;
   method: string;
   headers?: Record<string, string>;
-  body?: ExtensionMakeRequestBody;
+  body?: string | Record<string, any>;
+  bodyType?: "string" | "FormData" | "URLSearchParams" | "object";
 }
 
+export type ExtensionMakeRequestBodyType = ExtensionMakeRequest["bodyType"];
+
 export type ExtensionMakeRequestResponse<T> = ExtensionBaseResponse<{
   response: {
     statusCode: number;
diff --git a/src/backend/extension/request.ts b/src/backend/extension/request.ts
index 3e3f9b8b..96f3b61c 100644
--- a/src/backend/extension/request.ts
+++ b/src/backend/extension/request.ts
@@ -7,7 +7,7 @@ export function getBodyTypeFromBody(
   if (body instanceof FormData) return "FormData";
   if (body instanceof URLSearchParams) return "URLSearchParams";
   if (typeof body === "object") return "object";
-  return "string";
+  return undefined;
 }
 
 export function convertBodyToObject(body: unknown): any {
diff --git a/src/backend/providers/fetchers.ts b/src/backend/providers/fetchers.ts
index 0c04013d..5cb6f6ba 100644
--- a/src/backend/providers/fetchers.ts
+++ b/src/backend/providers/fetchers.ts
@@ -69,14 +69,11 @@ function makeFinalHeaders(
 
 export function makeExtensionFetcher() {
   const fetcher: Fetcher = async (url, ops) => {
-    const opsWithoutBody = { ...ops, body: undefined };
     const result = await sendExtensionRequest<any>({
       url,
-      ...opsWithoutBody,
-      ...(ops.body && {
-        body: convertBodyToObject(ops.body),
-        bodyType: getBodyTypeFromBody(ops.body),
-      }),
+      ...ops,
+      body: convertBodyToObject(ops.body),
+      bodyType: getBodyTypeFromBody(ops.body),
     });
     if (!result?.success) throw new Error(`extension error: ${result?.error}`);
     const res = result.response;