diff --git a/src/components/SettingsSidebar.tsx b/src/components/SettingsSidebar.tsx
index 5d4c69e..2c033fe 100644
--- a/src/components/SettingsSidebar.tsx
+++ b/src/components/SettingsSidebar.tsx
@@ -1340,13 +1340,13 @@ function SettingsSidebar({
                                     <div style={{ display: "flex", gap: "8px" }}>
                                         <button
                                             className={`px-3 py-2 rounded text-sm ${weekStartDay === 1 ? "bg-blue-600 text-white" : "bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300"}`}
-                                            onClick={() => setWeekStartDay(1)}
+                                            onClick={() => { setWeekStartDay(1); saveSetting("weekStartDay", 1); }}
                                         >
                                             {t.monday}
                                         </button>
                                         <button
                                             className={`px-3 py-2 rounded text-sm ${weekStartDay === 0 ? "bg-blue-600 text-white" : "bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300"}`}
-                                            onClick={() => setWeekStartDay(0)}
+                                            onClick={() => { setWeekStartDay(0); saveSetting("weekStartDay", 0); }}
                                         >
                                             {t.sunday}
                                         </button>