diff --git a/components/Layout.tsx b/components/Layout.tsx
index 4cbd84c..0bb306b 100644
--- a/components/Layout.tsx
+++ b/components/Layout.tsx
@@ -83,10 +83,12 @@ export const Layout: React.FC<{ children: React.ReactNode, currentUser: User }>
           {/* User Profile Mini */}
           <div className="p-4 border-t border-slate-100">
             <div className="flex items-center gap-3 p-2 rounded-lg bg-slate-50 border border-slate-100">
-              <img src={currentUser.avatar_url} alt="User" className="w-10 h-10 rounded-full object-cover" />
+              <img src={currentUser?.avatar_url || 'https://ui-avatars.com/api/?name=User'} alt="User" className="w-10 h-10 rounded-full object-cover" />
               <div className="flex-1 min-w-0">
-                <p className="text-sm font-semibold text-slate-900 truncate">{currentUser.name}</p>
-                <p className="text-xs text-slate-500 truncate capitalize">{currentUser.role === 'super_admin' ? 'Super Admin' : currentUser.role}</p>
+                <p className="text-sm font-semibold text-slate-900 truncate">{currentUser?.name || 'Usuário'}</p>
+                <p className="text-xs text-slate-500 truncate capitalize">
+                  {currentUser?.role === 'super_admin' ? 'Super Admin' : (currentUser?.role || 'Agente')}
+                </p>
               </div>
               <button 
                 onClick={handleLogout}