diff --git a/aat-android/src/main/kotlin/ch/bailu/aat/activities/PreferencesActivity.kt b/aat-android/src/main/kotlin/ch/bailu/aat/activities/PreferencesActivity.kt
index 6b812581c..7fe70a53a 100644
--- a/aat-android/src/main/kotlin/ch/bailu/aat/activities/PreferencesActivity.kt
+++ b/aat-android/src/main/kotlin/ch/bailu/aat/activities/PreferencesActivity.kt
@@ -70,7 +70,7 @@ class PreferencesActivity : ActivityContext(), OnPreferencesChanged {
     override fun onActivityResult(
         requestCode: Int,
         resultCode: Int,
-        data: Intent
+        data: Intent? // Parameter of API call is nullable
     ) {
         SolidSAF.onActivityResult(this, requestCode, resultCode, data)
     }