diff --git a/main.py b/main.py
index 42a5656..8c550a2 100644
--- a/main.py
+++ b/main.py
@@ -997,7 +997,7 @@ def save_user_settings(self):
             self.conf.set("UI", "language", "en_DE")
 
         elif self.ui.radio_ui_language_chinese_simplified.isChecked():
-            self.conf.set("UI", "language", "zh-CN")
+            self.conf.set("UI", "language", "zh_CN")
 
         elif self.ui.radio_ui_language_system_default.isChecked():
             self.conf.set("UI", "language", "system")