diff --git a/src/lib/config.ts b/src/lib/config.ts
index 1bcf93f..139e59d 100644
--- a/src/lib/config.ts
+++ b/src/lib/config.ts
@@ -5,15 +5,6 @@ import { Storage } from "@plasmohq/storage"
 
 const storage = new Storage()
 
-const enableFullRemoteRules = !(
-  navigator.userAgent.match(/firefox/i) ||
-  (navigator.userAgent.match(/safari/i) &&
-    !navigator.userAgent.match(/chrome/i))
-)
-const remoteRulesUrl = enableFullRemoteRules
-  ? "https://rsshub.js.org/build/radar-rules.js"
-  : "https://rsshub.js.org/build/radar-rules.json"
-
 export const defaultConfig = {
   rsshubDomain: "https://rsshub.app",
   rsshubAccessControl: {
@@ -45,8 +36,6 @@ export const defaultConfig = {
     local: true,
   },
   refreshTimeout: 2 * 60 * 60,
-  enableFullRemoteRules,
-  remoteRulesUrl,
 }
 
 export async function getConfig() {
diff --git a/src/lib/rules.ts b/src/lib/rules.ts
index 5a44d03..e2d6a08 100644
--- a/src/lib/rules.ts
+++ b/src/lib/rules.ts
@@ -1,20 +1,17 @@
 import _ from "lodash"
 
-import { defaultConfig, getConfig } from "./config"
+import { getConfig } from "./config"
 import { defaultRules } from "./radar-rules"
 import type { Rules } from "./types"
+import { getRadarRulesUrl } from "./utils"
 
 export function parseRules(rules: string, forceJSON?: boolean) {
   let incomeRules = rules
   if (incomeRules) {
     if (typeof rules === "string") {
-      if (defaultConfig.enableFullRemoteRules && !forceJSON) {
-        incomeRules = window["lave".split("").reverse().join("")](rules)
-      } else {
-        try {
-          incomeRules = JSON.parse(rules)
-        } catch (error) {}
-      }
+      try {
+        incomeRules = JSON.parse(rules)
+      } catch (error) {}
     }
   }
   return _.mergeWith(defaultRules, incomeRules, (objValue, srcValue) => {
@@ -43,7 +40,7 @@ export function getRemoteRules() {
   return new Promise<string>(async (resolve, reject) => {
     const config = await getConfig()
     try {
-      const res = await fetch(config.remoteRulesUrl)
+      const res = await fetch(getRadarRulesUrl(config.rsshubDomain))
       resolve(res.text())
     } catch (error) {
       reject(error)
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index 201cd3e..d97af69 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -42,3 +42,7 @@ export async function fetchRSSContent(url: string) {
   }
   return content
 }
+
+export function getRadarRulesUrl(rsshubDomain: string) {
+  return `${rsshubDomain}/api/radar/rules`
+}
diff --git a/src/options/routes/General.tsx b/src/options/routes/General.tsx
index 6f0b77f..916b888 100644
--- a/src/options/routes/General.tsx
+++ b/src/options/routes/General.tsx
@@ -16,6 +16,7 @@ import { quickSubscriptions } from "~/lib/quick-subscriptions"
 import report from "~/lib/report"
 import { getRulesCount, parseRules } from "~/lib/rules"
 import type { Rules as IRules } from "~/lib/types"
+import { getRadarRulesUrl } from "~/lib/utils"
 
 function General() {
   let [config] = useStorage("config")
@@ -133,12 +134,8 @@ function General() {
               </Label>
               <Input
                 id="remoteRulesUrl"
-                value={config.remoteRulesUrl}
-                onChange={(e) =>
-                  setConfig({
-                    remoteRulesUrl: e.target.value,
-                  })
-                }
+                disabled
+                value={getRadarRulesUrl(config.rsshubDomain)}
               />
             </div>
             <div className="grid w-full items-center gap-2">