diff --git a/app/src/util/onGetConfig.ts b/app/src/util/onGetConfig.ts
index 60680fffe..cac6d6020 100644
--- a/app/src/util/onGetConfig.ts
+++ b/app/src/util/onGetConfig.ts
@@ -375,7 +375,7 @@ const initWindow = () => {
             localStorage.setItem(Constants.LOCAL_EXPORTPDF, JSON.stringify(Object.assign(ipcData.pdfOptions, {
                 removeAssets: ipcData.removeAssets,
                 keepFold: ipcData.keepFold,
-                merge: ipcData.mergeSubdocs,
+                mergeSubdocs: ipcData.mergeSubdocs,
             })));
             try {
                 window.siyuan.printWin.webContents.printToPDF(ipcData.pdfOptions).then((pdfData) => {