diff --git a/admin.php b/admin.php
index cc01e22..3f3c77d 100644
--- a/admin.php
+++ b/admin.php
@@ -385,7 +385,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$activeTab = 'system';
try {
$aiEnabled = isset($_POST['ai_enabled']) ? 1 : 0;
- $aiModel = trim((string)($_POST['ai_model'] ?? 'gemini-1.5-pro'));
+ $aiModel = trim((string)($_POST['ai_model'] ?? 'gemini-2.0-flash'));
$aiProvider = trim((string)($_POST['ai_provider'] ?? ''));
if (empty($aiProvider)) {
$aiProvider = str_contains($aiModel, 'gpt') ? 'openai' : 'gemini';
@@ -2126,10 +2126,9 @@ require_once __DIR__ . '/includes/header.php';