diff --git a/electron/main.js b/electron/main.js
index e8f005d..53de763 100644
--- a/electron/main.js
+++ b/electron/main.js
@@ -313,7 +313,7 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl, printOptions = {}) => {
     const printOptions_ptp = {
       printer: targetPrinterName || undefined,
       silent: true, // 静默打印
-      side: sideOption, // 双面打印选项
+      duplex: duplexMode || false, // 双面打印选项
     };
 
     await ptp.print(pdfFilePath, printOptions_ptp);