diff --git a/ui/pyui/defense_ui.py b/ui/pyui/defense_ui.py
index 4b411a9..7beb907 100644
--- a/ui/pyui/defense_ui.py
+++ b/ui/pyui/defense_ui.py
@@ -136,7 +136,7 @@ class ExportSettingsCard(GroupHeaderCardWidget):
         self.radioGroup.addButton(self.wordRadio)
         self.radioHbox.addWidget(self.pdfRadio)
         self.radioHbox.addWidget(self.wordRadio)
-        self.pdfRadio.setChecked(True)
+        self.wordRadio.setChecked(True)
         self.hintIcon = IconWidget(FluentIcon.INFO.icon(color=MAIN_THEME_COLOR))
         self.hintLabel = BodyLabel("点击开始按钮以开始生成 👉")
         self.chooseExportDirectoryButton.setFixedWidth(120)