diff --git a/encoder/static.php b/encoder/static.php
index d03527c..61d89e9 100755
--- a/encoder/static.php
+++ b/encoder/static.php
@@ -305,7 +305,7 @@ http {
                 $file = "/var/www/encoder-rtmp.sh";
                 file_put_contents($file, $rtmp);
                 exec('sudo cp /var/www/nginx.conf /etc/nginx/nginx.conf');
-                exec("nginx -t 2>&1", $output, $status);
+                exec("sudo nginx -t 2>&1", $output, $status);
                 if ($status == 0) {
                     error_log("nginx tested fine ");
                     exec("sudo systemctl restart nginx 2>&1", $o, $s);