diff --git a/src/ko/newtoki/build.gradle b/src/ko/newtoki/build.gradle
index b46173f88..89bf91f72 100644
--- a/src/ko/newtoki/build.gradle
+++ b/src/ko/newtoki/build.gradle
@@ -5,7 +5,7 @@ ext {
     extName = 'NewToki / ManaToki'
     pkgNameSuffix = 'ko.newtoki'
     extClass = '.TokiFactory'
-    extVersionCode = 24
+    extVersionCode = 25
     isNsfw = true
 }
 
diff --git a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/ManaToki.kt b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/ManaToki.kt
index 96002caf0..58304b1d4 100644
--- a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/ManaToki.kt
+++ b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/ManaToki.kt
@@ -12,14 +12,12 @@ import org.jsoup.nodes.Element
  * ManaToki is too big to support in a Factory File., So split into separate file.
  */
 
-object ManaToki : NewToki("ManaToki", "comic") {
+object ManaToki : NewToki("ManaToki", "comic", manaTokiPreferences) {
     // / ! DO NOT CHANGE THIS !  Only the site name changed from newtoki.
     override val id = MANATOKI_ID
 
     override val baseUrl get() = "https://$MANATOKI_PREFIX$domainNumber.net"
 
-    override val preferences = manaTokiPreferences
-
     private val chapterRegex by lazy { Regex(""" [ \d,~.-]+화$""") }
 
     fun latestUpdatesElementParse(element: Element): SManga {
diff --git a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewToki.kt b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewToki.kt
index 8fcea9398..28830ec18 100644
--- a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewToki.kt
+++ b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewToki.kt
@@ -14,7 +14,6 @@ import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
 import eu.kanade.tachiyomi.util.asJsoup
 import okhttp3.HttpUrl.Companion.toHttpUrl
-import okhttp3.OkHttpClient
 import okhttp3.Response
 import org.jsoup.Jsoup
 import org.jsoup.nodes.Document
@@ -30,18 +29,17 @@ import java.util.concurrent.TimeUnit
  *
  * Based on https://github.com/gnuboard/gnuboard5
  **/
-abstract class NewToki(override val name: String, private val boardName: String) : ConfigurableSource, ParsedHttpSource() {
+abstract class NewToki(
+    override val name: String,
+    private val boardName: String,
+    private val preferences: SharedPreferences,
+) : ParsedHttpSource(), ConfigurableSource {
 
     override val lang: String = "ko"
     override val supportsLatest = true
 
-    override val client: OkHttpClient by lazy {
-        buildClient(withRateLimit = false)
-    }
-
-    protected val rateLimitedClient: OkHttpClient by lazy {
-        buildClient(withRateLimit = true)
-    }
+    override val client by lazy { buildClient(withRateLimit = false) }
+    private val rateLimitedClient by lazy { buildClient(withRateLimit = true) }
 
     private fun buildClient(withRateLimit: Boolean) =
         network.cloudflareClient.newBuilder()
@@ -260,10 +258,6 @@ abstract class NewToki(override val name: String, private val boardName: String)
     // We are able to get the image URL directly from the page list
     override fun imageUrlParse(document: Document) = throw UnsupportedOperationException("This method should not be called!")
 
-    override fun getFilterList() = FilterList()
-
-    abstract val preferences: SharedPreferences
-
     override fun setupPreferenceScreen(screen: androidx.preference.PreferenceScreen) {
         getPreferencesInternal(screen.context).map(screen::addPreference)
     }
diff --git a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewTokiWebtoon.kt b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewTokiWebtoon.kt
index e913b1012..8cb791ef6 100644
--- a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewTokiWebtoon.kt
+++ b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/NewTokiWebtoon.kt
@@ -6,14 +6,12 @@ import eu.kanade.tachiyomi.source.model.FilterList
 import okhttp3.HttpUrl.Companion.toHttpUrl
 import okhttp3.Request
 
-object NewTokiWebtoon : NewToki("NewToki", "webtoon") {
+object NewTokiWebtoon : NewToki("NewToki", "webtoon", newTokiPreferences) {
     // / ! DO NOT CHANGE THIS !  Prevent to treating as a new site
     override val id = NEWTOKI_ID
 
     override val baseUrl get() = "https://$NEWTOKI_PREFIX$domainNumber.com"
 
-    override val preferences = newTokiPreferences
-
     override fun searchMangaRequest(page: Int, query: String, filters: FilterList): Request {
         val url = ("$baseUrl/webtoon" + (if (page > 1) "/p$page" else "")).toHttpUrl().newBuilder()
         filters.forEach { filter ->
diff --git a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/Preferences.kt b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/Preferences.kt
index 176a64118..fa81cab9f 100644
--- a/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/Preferences.kt
+++ b/src/ko/newtoki/src/eu/kanade/tachiyomi/extension/ko/newtoki/Preferences.kt
@@ -14,8 +14,8 @@ const val NEWTOKI_ID = 1977818283770282459L // "NewToki (Webtoon)/ko/1"
 const val MANATOKI_PREFIX = "manatoki"
 const val NEWTOKI_PREFIX = "newtoki"
 
-val manaTokiPreferences = getSharedPreferences(MANATOKI_ID)
-val newTokiPreferences = getSharedPreferences(NEWTOKI_ID)
+val manaTokiPreferences = getSharedPreferences(MANATOKI_ID).migrate()
+val newTokiPreferences = getSharedPreferences(NEWTOKI_ID).migrate()
 
 fun getPreferencesInternal(context: Context) = arrayOf(
 
@@ -54,6 +54,22 @@ var SharedPreferences.domainNumber: String
 val SharedPreferences.rateLimitPeriod: Int
     get() = getString(RATE_LIMIT_PERIOD_PREF, RATE_LIMIT_PERIOD_DEFAULT)!!.toInt().coerceIn(1, RATE_LIMIT_PERIOD_MAX)
 
+private fun SharedPreferences.migrate(): SharedPreferences {
+    if ("Override BaseUrl" !in this) return this // already migrated
+    val editor = edit().clear() // clear all legacy preferences listed below
+    val oldValue = try { // this was a long
+        getLong(RATE_LIMIT_PERIOD_PREF, -1).toInt()
+    } catch (_: ClassCastException) {
+        -1
+    }
+    if (oldValue != -1) { // convert to string
+        val newValue = oldValue.coerceIn(1, RATE_LIMIT_PERIOD_MAX)
+        editor.putString(RATE_LIMIT_PERIOD_PREF, newValue.toString())
+    }
+    editor.apply()
+    return this
+}
+
 /**
  * Don't use the following legacy keys:
  * - "Override BaseUrl"