diff --git a/internal/service/task.go b/internal/service/task.go
index 6f4889a..32c3c94 100644
--- a/internal/service/task.go
+++ b/internal/service/task.go
@@ -154,7 +154,7 @@ func (svc *TaskService) ExportTask(ctx context.Context, req *task.ExportTaskRequ
 	// call http://localhost:8055/export
 	body := &bytes.Buffer{}
 	writer := multipart.NewWriter(body)
-	_ = writer.WriteField("markdown", markdown)
+	_ = writer.WriteField("markdown_input", markdown)
 	_ = writer.WriteField("type", req.Type)
 	writer.Close()