diff --git a/src/runtime/webcore/Blob.zig b/src/runtime/webcore/Blob.zig
index 6cf5c0475545..9e01f7528134 100644
--- a/src/runtime/webcore/Blob.zig
+++ b/src/runtime/webcore/Blob.zig
@@ -2974,8 +2974,12 @@ pub fn getWriter(
     };
 
     if (arguments.len > 0 and arguments.ptr[0].isObject()) {
-        stream_start = try jsc.WebCore.streams.Start.fromJSWithTag(globalThis, arguments[0], .FileSink);
-        stream_start.FileSink.input_path = input_path;
+        var parsed = try jsc.WebCore.streams.Start.fromJSWithTag(globalThis, arguments[0], .FileSink);
+        if (parsed == .FileSink) {
+            parsed.FileSink.input_path.deinit();
+            parsed.FileSink.input_path = input_path;
+            stream_start = parsed;
+        }
     }
 
     switch (sink.start(stream_start)) {
diff --git a/test/js/bun/util/filesink.test.ts b/test/js/bun/util/filesink.test.ts
index 736e5b085731..e55477963709 100644
--- a/test/js/bun/util/filesink.test.ts
+++ b/test/js/bun/util/filesink.test.ts
@@ -207,6 +207,18 @@ it("write result is not cumulative", async () => {
   await util.promisify(fs.close)(fd);
 });
 
+it("writer() does not crash when options object has a non-string 'path' property", async () => {
+  const x = tmpdirSync();
+  const dest = path.join(x, "test.txt");
+  const file = Bun.file(dest);
+  const options = {};
+  Object.defineProperty(options, "path", { enumerable: true, value: Uint32Array });
+  const writer = file.writer(options);
+  await writer.write("hello");
+  await writer.end();
+  expect(await Bun.file(dest).text()).toBe("hello");
+});
+
 if (isWindows) {
   it("ENOENT, Windows", () => {
     expect(() => Bun.file("A:\\this-does-not-exist.txt").writer()).toThrow(