diff --git a/server/api/auth/account.patch.ts b/server/api/auth/account.patch.ts
index d148e67..b8f0e5e 100644
--- a/server/api/auth/account.patch.ts
+++ b/server/api/auth/account.patch.ts
@@ -1,5 +1,5 @@
 import { readAccounts, writeAccounts } from "~/server/database";
-import { DateTime } from "luxon";
+import { DateTime, Info } from "~/shared/utils/luxon";
 import { apiAccountPatchSchema } from "~/shared/types/api";
 import { z } from "zod/v4-mini";
 
@@ -16,11 +16,11 @@ export default defineEventHandler(async (event) => {
 	}
 
 	if (patch.timezone?.length) {
-		const zonedTime = DateTime.local({ locale: "en-US" }).setZone(patch.timezone);
-		if (!zonedTime.isValid) {
+		const zone = Info.normalizeZone(patch.timezone);
+		if (!zone.isValid) {
 			throw createError({
 				status: 400,
-				message: "Invalid timezone: " + zonedTime.invalidExplanation,
+				message: `Invalid timezone: the zone "${patch.timezone} is not supported`,
 			});
 		}
 	}