diff --git a/app/api/auth/[...nextauth]/route.ts b/app/api/auth/[...nextauth]/route.ts
index b1515f4..995b29c 100644
--- a/app/api/auth/[...nextauth]/route.ts
+++ b/app/api/auth/[...nextauth]/route.ts
@@ -123,7 +123,7 @@ export const authOptions: NextAuthOptions = {
       session.accessToken = token.accessToken as string;
       session.user = {
         ...session.user,
-        id: token.sub as string,
+        id: token.sub ?? '',
         first_name: token.first_name ?? '',
         last_name: token.last_name ?? '',
         username: token.username ?? '',