diff --git a/src/app/admin/page.tsx b/src/app/admin/page.tsx
index 46ff6bf..2b4c804 100644
--- a/src/app/admin/page.tsx
+++ b/src/app/admin/page.tsx
@@ -914,7 +914,7 @@ export default function AdminPage() {
                 </div>}
 
                 {/* IP-Allowlist — nur superadmin */}
-                {isSuperAdmin && smtpStatus && smtpStatus.allowed_ips?.length > 0 && (
+                {isSuperAdmin && smtpStatus && (smtpStatus.allowed_ips?.length ?? 0) > 0 && (
                   <Card>
                     <CardContent className="pt-6 space-y-2">
                       <span className="text-sm font-medium text-muted-foreground">SMTP IP-Allowlist</span>