diff --git a/app/api/auth/callback/route.ts b/app/api/auth/callback/route.ts
index 819942f..86fa8a6 100644
--- a/app/api/auth/callback/route.ts
+++ b/app/api/auth/callback/route.ts
@@ -7,13 +7,13 @@ export async function GET(req: Request) {
   const url = new URL(req.url);
   const code = url.searchParams.get("code");
   const isHttps = url.protocol === "https:";
-  const domain = env.COOKIE_DOMAIN ?? getCookieDomain(url.hostname);
+
 
   if (!code) {
     return NextResponse.redirect(`${BASE_URL}/login?error=missing_code`);
   }
 
-  const redirectUri = `${origin}/api/auth/callback`;
+  const redirectUri = `${BASE_URL}/api/auth/callback`;
 
   const tokenRes = await fetch(
     `${env.KEYCLOAK_BASE_URL}/realms/${env.KEYCLOAK_REALM}/protocol/openid-connect/token`,
@@ -52,7 +52,7 @@ export async function GET(req: Request) {
     sameSite: "lax",
     path: "/",
     maxAge: data.expires_in,
-    ...(domain ? { domain } : {}),
+    ...(BASE_URL ? { BASE_URL } : {}),
   });
 
   return res;