diff --git a/zefie_wtvp_minisrv/includes/ServiceVault/wtv-admin/validate-operator-tweaks.js b/zefie_wtvp_minisrv/includes/ServiceVault/wtv-admin/validate-operator-tweaks.js
index 2ab8ff37..f140f617 100644
--- a/zefie_wtvp_minisrv/includes/ServiceVault/wtv-admin/validate-operator-tweaks.js
+++ b/zefie_wtvp_minisrv/includes/ServiceVault/wtv-admin/validate-operator-tweaks.js
@@ -20,7 +20,7 @@ if (auth === true) {
             let v = request_headers.query[k];
 
             // enable_multi_query may send ["false", "on"] for checkboxes due to webtvism
-            if (util.isArray(v)) v = v[(v.length - 1)]; 
+            if (Array.isArray(v)) v = v[(v.length - 1)]; 
 
             // convert numbers back to int before writing to config
             if (!isNaN(parseInt(v))) v = parseInt(v);