diff --git a/platform/mv3/rulesets.json b/platform/mv3/rulesets.json
index 2a3819630..8f8a6f8f2 100644
--- a/platform/mv3/rulesets.json
+++ b/platform/mv3/rulesets.json
@@ -466,7 +466,6 @@
   {
     "id": "pol-0",
     "group": "regions",
-    "parent": null,
     "lang": "szl pl _",
     "name": "🇵🇱pl: Oficjalne Polskie Filtry do uBlocka Origin",
     "tags": "ads polish polski",