diff --git a/assets/resources/scriptlets.js b/assets/resources/scriptlets.js
index 3a7511ba9d187..45d0e4bfab68a 100644
--- a/assets/resources/scriptlets.js
+++ b/assets/resources/scriptlets.js
@@ -1009,6 +1009,7 @@ function getSafeCookieValuesFn() {
         'on', 'off',
         'true', 't', 'false', 'f',
         'yes', 'y', 'no', 'n',
+        '-1',
     ];
 }