diff --git a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/SettingsFragment.kt b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/SettingsFragment.kt
index b171745a..392c04a4 100644
--- a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/SettingsFragment.kt
+++ b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/SettingsFragment.kt
@@ -102,7 +102,7 @@ class SettingsFragment :
         MediaSessionHandler::class.java
     )
 
-    override fun onCreatePreferences(savedInstanceState: Bundle, rootKey: String) {
+    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.settings, rootKey)
     }