diff --git a/app/src/main/res/values-vi/strings.xml b/app/src/main/res/values-vi/strings.xml
index 23e1adf0a..0f01b04ca 100644
--- a/app/src/main/res/values-vi/strings.xml
+++ b/app/src/main/res/values-vi/strings.xml
@@ -214,4 +214,5 @@
     <string name="controlcenter_navigation_drawer_close">Đóng ngăn điều hướng</string>
     <string name="controlcenter_navigation_drawer_open">Mở ngăn điều hướng</string>
     <string name="find_lost_device_message">Tìm kiếm %1$s\?</string>
+    <string name="pref_theme_system">Hệ thống</string>
 </resources>
\ No newline at end of file