diff --git a/nginx/sites-available/zammad.itguys.com.br.conf b/nginx/sites-available/zammad.itguys.com.br.conf
index 6a3e61b..3a649ce 100644
--- a/nginx/sites-available/zammad.itguys.com.br.conf
+++ b/nginx/sites-available/zammad.itguys.com.br.conf
@@ -99,7 +99,7 @@ server {
     add_header X-Content-Type-Options "nosniff" always;
     add_header X-Frame-Options "SAMEORIGIN" always;
     add_header Referrer-Policy "no-referrer" always;
-    add_header Permissions-Policy "geolocation=(), midi=(), sync-xhr='self', microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(), payment=()" always;
+    add_header Permissions-Policy "geolocation=(), midi=(), sync-xhr=(self), microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(self), payment=()" always;
     # Content-Security-Policy (CSP) geralmente é mais seguro gerenciar na aplicação.
 
     # --- Bloco de Compressão ---