diff --git a/www/web-proxy-sso/src/opnsense/scripts/OPNsense/SSOProxyAD/updateDomain.php b/www/web-proxy-sso/src/opnsense/scripts/OPNsense/SSOProxyAD/updateDomain.php
index 3cb2321d0..8e900ffac 100755
--- a/www/web-proxy-sso/src/opnsense/scripts/OPNsense/SSOProxyAD/updateDomain.php
+++ b/www/web-proxy-sso/src/opnsense/scripts/OPNsense/SSOProxyAD/updateDomain.php
@@ -53,7 +53,7 @@ if ($enabled == 1) {
             '--auto-update',
             '--computer-name',
             strtolower($hostname),
-            ' --keytab',
+            '--keytab',
             $keytab
         ));
         exec($cmd, $output_msktutil, $error_msktutil);