diff --git a/app/src/protyle/export/index.ts b/app/src/protyle/export/index.ts
index 5c536934e..f065b95ba 100644
--- a/app/src/protyle/export/index.ts
+++ b/app/src/protyle/export/index.ts
@@ -2,7 +2,7 @@ import {hideMessage, showMessage} from "../../dialog/message";
 import {Constants} from "../../constants";
 /// #if !BROWSER
 import {OpenDialogReturnValue} from "electron";
-import {BrowserWindow, dialog} from "@electron/remote";
+import {BrowserWindow, dialog, app} from "@electron/remote";
 import * as fs from "fs";
 import * as path from "path";
 import {afterExport} from "./util";
@@ -86,6 +86,8 @@ const renderPDF = (id: string) => {
             webSecurity: false,
         },
     });
+    window.siyuan.printWin.webContents.userAgent = 'SiYuan/' + app.getVersion() + ' https://b3log.org/siyuan Electron'
+
     let pdfWidth = "";
     if (localData.pageSize === "A3") {
         if (localData.landscape) {