diff --git a/src/lib/auth.ts b/src/lib/auth.ts
index 68c749f..8db19c0 100644
--- a/src/lib/auth.ts
+++ b/src/lib/auth.ts
@@ -1,4 +1,4 @@
-import { createServerFn } from "@tanstack/react-start";
+import { createServerFn, createServerOnlyFn } from "@tanstack/react-start";
 import { z } from "zod";
 
 import { toLocalDateTimeString } from "@/lib/datetime";
@@ -41,12 +41,12 @@ function toPerfil(row: PerfilRow): Perfil {
   };
 }
 
-async function getSessionUserId(): Promise<string | null> {
+const getSessionUserId = createServerOnlyFn(async (): Promise<string | null> => {
   const { getSessionUserId: getServerSessionUserId } = await import("@/lib/auth.server");
   return await getServerSessionUserId();
-}
+});
 
-async function fetchSessionProfile(userId: string): Promise<SessaoAtual | null> {
+const fetchSessionProfile = createServerOnlyFn(async (userId: string): Promise<SessaoAtual | null> => {
   const [{ getPool, sql }] = await Promise.all([import("@/lib/db.server")]);
   const pool = await getPool();
 
@@ -82,7 +82,7 @@ async function fetchSessionProfile(userId: string): Promise<SessaoAtual | null>
     admin: Boolean(row.admin),
     perfil,
   };
-}
+});
 
 async function requireSession(): Promise<SessaoAtual> {
   const userId = await getSessionUserId();