diff --git a/src/public/app/widgets/view_widgets/calendar_view.ts b/src/public/app/widgets/view_widgets/calendar_view.ts
index f2dbaa971..ebb987839 100644
--- a/src/public/app/widgets/view_widgets/calendar_view.ts
+++ b/src/public/app/widgets/view_widgets/calendar_view.ts
@@ -4,8 +4,8 @@ import ViewMode, { type ViewModeArgs } from "./view_mode.js";
 import type FNote from "../../entities/fnote.js";
 import server from "../../services/server.js";
 import ws from "../../services/ws.js";
-import type { EventDragStopArg, EventResizeDoneArg } from "@fullcalendar/interaction";
 import { t } from "../../services/i18n.js";
+import options from "../../services/options.js";
 
 const TPL = `
 <div class="calendar-view">
@@ -83,7 +83,8 @@ export default class CalendarView extends ViewMode {
                 week: t("calendar_view.week"),
                 day: t("calendar_view.day"),
                 list: t("calendar_view.list")
-            }
+            },
+            firstDay: options.getInt("firstDayOfWeek") ?? 0
         });
         calendar.render();