diff --git a/src/utils.ts b/src/utils.ts
index a773431b..408b346e 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -19,7 +19,7 @@ export function isJSONSerializable(value: any): boolean {
     return false;
   }
   const t = typeof value;
-  if (t === "string" || t === "number" || t === "boolean" || t === null) {
+  if (t === "string" || t === "number" || t === "boolean" || value === null) {
     return true;
   }
   if (t !== "object") {
diff --git a/test/index.test.ts b/test/index.test.ts
index 5ac20b07..5ac7c4d1 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -10,6 +10,7 @@ import {
 import { Readable } from "node:stream";
 import { H3, HTTPError, readBody, serve } from "h3";
 import { $fetch } from "../src/index.ts";
+import { isJSONSerializable } from "../src/utils.ts";
 
 describe("ofetch", () => {
   let listener: ReturnType<typeof serve>;
@@ -158,6 +159,10 @@ describe("ofetch", () => {
     }
   });
 
+  it("treats null as JSON serializable", () => {
+    expect(isJSONSerializable(null)).toBe(true); // eslint-disable-line unicorn/no-null
+  });
+
   it("does not stringify body when content type != application/json", async () => {
     const message = '"Hallo von Pascal"';
     const { body } = await $fetch(getURL("echo"), {