diff --git a/src/pages/api/config.ts b/src/pages/api/config.ts
index 1bf4de9..ff07545 100644
--- a/src/pages/api/config.ts
+++ b/src/pages/api/config.ts
@@ -11,7 +11,9 @@ export const POST: APIRoute = async ({ request }) => {
       fs.mkdirSync(dataDir, { recursive: true });
     }
 
-    const { siteConfig: currentSite, themeConfig: currentTheme, smtpConfig: currentSmtp } = loadWaasConfigs(Astro.request.headers.get('user-agent') ?? '');
+    const userAgent = request.headers.get('user-agent') ?? '';
+    const { siteConfig: currentSite, themeConfig: currentTheme, smtpConfig: currentSmtp } = loadWaasConfigs(userAgent);
+
 
     if (body.siteConfig) {
       const newSite = {