diff --git a/src/routes/login/index.json.ts b/src/routes/login/index.json.ts
index 5be9cb219..ded546538 100644
--- a/src/routes/login/index.json.ts
+++ b/src/routes/login/index.json.ts
@@ -4,8 +4,8 @@ import { ErrorHandler } from '$lib/database';
 import type { RequestHandler } from '@sveltejs/kit';
 
 export const post: RequestHandler = async (event) => {
-	let { email, password } = await event.request.json();
-	email = email.toLowerCase();
+	const { email, password } = await event.request.json();
+
 	try {
 		const { body } = await db.login({ email, password });
 		event.locals.session.data = body;
diff --git a/src/routes/login/index.svelte b/src/routes/login/index.svelte
index b1a538c82..f337b853c 100644
--- a/src/routes/login/index.svelte
+++ b/src/routes/login/index.svelte
@@ -18,7 +18,7 @@
 	async function handleSubmit() {
 		loading = true;
 		try {
-			const { teamId } = await post(`/login.json`, { email, password });
+			const { teamId } = await post(`/login.json`, { email: email.toLowerCase(), password });
 			if (teamId === '0') {
 				window.location.replace('/settings');
 			} else {
diff --git a/src/routes/teams/[id]/index.svelte b/src/routes/teams/[id]/index.svelte
index 487e46486..80c4d58e7 100644
--- a/src/routes/teams/[id]/index.svelte
+++ b/src/routes/teams/[id]/index.svelte
@@ -47,7 +47,7 @@
 			await post(`/teams/${id}/invitation/invite.json`, {
 				teamId: team.id,
 				teamName: invitation.teamName,
-				email: invitation.email,
+				email: invitation.email.toLowerCase(),
 				permission: invitation.permission
 			});
 			return window.location.reload();