diff --git a/src/js/static-filtering-parser.js b/src/js/static-filtering-parser.js
index 92c63df80..80b233cdc 100644
--- a/src/js/static-filtering-parser.js
+++ b/src/js/static-filtering-parser.js
@@ -3066,6 +3066,7 @@ export const netOptionTokenDescriptors = new Map([
     [ 'object', { canNegate: true } ],
     /* synonym */ [ 'object-subrequest', { canNegate: true } ],
     [ 'other', { canNegate: true } ],
+    [ 'permissions', { mustAssign: true } ],
     [ 'ping', { canNegate: true } ],
     /* synonym */ [ 'beacon', { canNegate: true } ],
     [ 'popunder', { } ],