diff --git a/core/src/main/java/org/kiwix/kiwixmobile/core/utils/SharedPreferenceUtil.kt b/core/src/main/java/org/kiwix/kiwixmobile/core/utils/SharedPreferenceUtil.kt
index fc3dc5807..25b5ea993 100644
--- a/core/src/main/java/org/kiwix/kiwixmobile/core/utils/SharedPreferenceUtil.kt
+++ b/core/src/main/java/org/kiwix/kiwixmobile/core/utils/SharedPreferenceUtil.kt
@@ -127,7 +127,8 @@ class SharedPreferenceUtil @Inject constructor(context: Context?) {
 
   val nightMode: NightModeConfig.Mode
     get() = from(
-      sharedPreferences.getString("", null)?.toInt() ?: AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
+      sharedPreferences.getString(PREF_NIGHT_MODE, null)?.toInt()
+        ?: AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
     )
 
   fun nightModes(): Flowable<NightModeConfig.Mode> = nightModes.startWith(nightMode)