diff --git a/CLAUDE.md b/CLAUDE.md
index 45c3290..2cdf8f0 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -42,7 +42,6 @@ Auth is handled by `better-auth` via `lib/auth.ts` (server) and `lib/auth-client
 - `ADMIN_EMAIL` — Only email allowed to log in
 - `BETTER_AUTH_SECRET` — Auth secret key
 - `GITHUB_CLIENT_ID` / `GITHUB_CLIENT_SECRET` — GitHub OAuth app (optional)
-- `NEXT_PUBLIC_GITHUB_ENABLED` — Set to enable GitHub OAuth login on the client
 - `SMTP_USER` / `SMTP_PASS` / `FROM_EMAIL` — Email via wirtanen.uberspace.de:465
 - `GOOGLE_CALENDAR_ID` — Calendar to sync bookings into
 - `GOOGLE_SERVICE_ACCOUNT_KEY_JSON` — Service account credentials (JSON string)
diff --git a/helpers/config.ts b/helpers/config.ts
new file mode 100644
index 0000000..8217fe7
--- /dev/null
+++ b/helpers/config.ts
@@ -0,0 +1,7 @@
+const { GITHUB_CLIENT_SECRET, GITHUB_CLIENT_ID } = process.env;
+
+export function getConfig() {
+  return {
+    githubAuthEnabled: Boolean(GITHUB_CLIENT_SECRET?.length && GITHUB_CLIENT_ID?.length),
+  };
+}
\ No newline at end of file
diff --git a/lib/auth.ts b/lib/auth.ts
index c281219..07625d2 100644
--- a/lib/auth.ts
+++ b/lib/auth.ts
@@ -4,6 +4,7 @@ import { mongodbAdapter } from "better-auth/adapters/mongodb"
 import { MongoClient, ServerApiVersion } from "mongodb"
 import { MONGO_URI } from "../db"
 import nodemailer from "nodemailer"
+import { getConfig } from "../helpers/config"
 
 async function sendEmail({ to, subject, url }: { to: string; subject: string; url: string }) {
   const transporter = nodemailer.createTransport({
@@ -28,7 +29,7 @@ const ADMIN_EMAIL = process.env.ADMIN_EMAIL
 const GITHUB_USERS_GRANTED = ['111471']
 const GITHUB_CLIENT_ID = process.env.GITHUB_CLIENT_ID;
 const GITHUB_CLIENT_SECRET = process.env.GITHUB_CLIENT_SECRET;
-const GITHUB_ENABLED = Boolean(GITHUB_CLIENT_SECRET?.length && GITHUB_CLIENT_ID?.length);
+const { githubAuthEnabled } = getConfig();
 
 const client = new MongoClient(MONGO_URI, {
   serverApi: {
@@ -47,7 +48,7 @@ export const auth = betterAuth({
       },
     }),
   ],
-  ...(GITHUB_ENABLED ? {
+  ...(githubAuthEnabled ? {
     socialProviders: {
       github: {
         provider: 'github',