diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/kavita/Kavita.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/kavita/Kavita.kt
index f900381610..cb6e52e68f 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/kavita/Kavita.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/kavita/Kavita.kt
@@ -9,6 +9,7 @@ import eu.kanade.tachiyomi.data.track.Tracker
 import eu.kanade.tachiyomi.data.track.model.TrackSearch
 import eu.kanade.tachiyomi.source.ConfigurableSource
 import eu.kanade.tachiyomi.source.Source
+import eu.kanade.tachiyomi.source.sourcePreferences
 import tachiyomi.domain.manga.model.Manga
 import tachiyomi.domain.source.service.SourceManager
 import uy.kohesive.injekt.injectLazy
@@ -121,7 +122,7 @@ class Kavita(id: Long) : Tracker(id, "Kavita"), EnhancedTracker {
                 (0..7).map { bytes[it].toLong() and 0xff shl 8 * (7 - it) }
                     .reduce(Long::or) and Long.MAX_VALUE
             }
-            val preferences = (sourceManager.get(sourceId) as ConfigurableSource).getPreferences()
+            val preferences = (sourceManager.get(sourceId) as ConfigurableSource).sourcePreferences()
 
             val prefApiUrl = preferences.getString("APIURL", "")
             val prefApiKey = preferences.getString("APIKEY", "")
diff --git a/app/src/main/java/eu/kanade/tachiyomi/source/SourceExtensions.kt b/app/src/main/java/eu/kanade/tachiyomi/source/SourceExtensions.kt
index 8f4faaaa9b..7be9c4d20b 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/source/SourceExtensions.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/source/SourceExtensions.kt
@@ -10,8 +10,6 @@ import uy.kohesive.injekt.api.get
 
 fun Source.icon(): Drawable? = Injekt.get<ExtensionManager>().getAppIconForSource(this.id)
 
-fun Source.getPreferenceKey(): String = "source_$id"
-
 fun Source.toStubSource(): StubSource = StubSource(id = id, lang = lang, name = name)
 
 fun Source.getNameForMangaInfo(): String {
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/SourcePreferencesScreen.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/SourcePreferencesScreen.kt
index 78aa371097..4e391cb3e4 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/SourcePreferencesScreen.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/SourcePreferencesScreen.kt
@@ -39,7 +39,7 @@ import eu.kanade.presentation.util.Screen
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.preference.SharedPreferencesDataStore
 import eu.kanade.tachiyomi.source.ConfigurableSource
-import eu.kanade.tachiyomi.source.getPreferenceKey
+import eu.kanade.tachiyomi.source.sourcePreferences
 import eu.kanade.tachiyomi.widget.TachiyomiTextInputEditText.Companion.setIncognito
 import tachiyomi.domain.source.service.SourceManager
 import tachiyomi.presentation.core.components.material.Scaffold
@@ -134,12 +134,9 @@ class SourcePreferencesFragment : PreferenceFragmentCompat() {
 
     private fun populateScreen(): PreferenceScreen {
         val sourceId = requireArguments().getLong(SOURCE_ID)
-        val source = Injekt.get<SourceManager>().get(sourceId)!!
+        val source = Injekt.get<SourceManager>().get(sourceId)!! as ConfigurableSource
 
-        check(source is ConfigurableSource)
-
-        val sharedPreferences = requireContext().getSharedPreferences(source.getPreferenceKey(), Context.MODE_PRIVATE)
-        val dataStore = SharedPreferencesDataStore(sharedPreferences)
+        val dataStore = SharedPreferencesDataStore(source.sourcePreferences())
         preferenceManager.preferenceDataStore = dataStore
 
         val sourceScreen = preferenceManager.createPreferenceScreen(requireContext())
diff --git a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/ConfigurableSource.kt b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/ConfigurableSource.kt
index 4be411e3b2..ea5eb848ed 100644
--- a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/ConfigurableSource.kt
+++ b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/ConfigurableSource.kt
@@ -13,8 +13,14 @@ interface ConfigurableSource : Source {
      *
      * @since extensions-lib 1.5
      */
-    fun getPreferences(): SharedPreferences =
-        Injekt.get<Application>().getSharedPreferences("source_$id", Context.MODE_PRIVATE)
+    fun getSourcePreferences(): SharedPreferences =
+        Injekt.get<Application>().getSharedPreferences(preferenceKey(), Context.MODE_PRIVATE)
 
     fun setupPreferenceScreen(screen: PreferenceScreen)
 }
+
+private fun ConfigurableSource.preferenceKey(): String = "source_$id"
+
+// TODO: use getSourcePreferences once all extensions are on ext-lib 1.5
+fun ConfigurableSource.sourcePreferences(): SharedPreferences =
+    Injekt.get<Application>().getSharedPreferences(preferenceKey(), Context.MODE_PRIVATE)