diff --git a/app/src/main/java/org/kiwix/kiwixmobile/webserver/ZimHostFragment.kt b/app/src/main/java/org/kiwix/kiwixmobile/webserver/ZimHostFragment.kt
index 58ec7c730..3efa14f21 100644
--- a/app/src/main/java/org/kiwix/kiwixmobile/webserver/ZimHostFragment.kt
+++ b/app/src/main/java/org/kiwix/kiwixmobile/webserver/ZimHostFragment.kt
@@ -40,11 +40,11 @@ import org.kiwix.kiwixmobile.core.BuildConfig
 import org.kiwix.kiwixmobile.core.base.BaseActivity
 import org.kiwix.kiwixmobile.core.base.BaseFragment
 import org.kiwix.kiwixmobile.core.extensions.toast
-import org.kiwix.kiwixmobile.core.utils.dialog.AlertDialogShower
 import org.kiwix.kiwixmobile.core.utils.ConnectivityReporter
-import org.kiwix.kiwixmobile.core.utils.dialog.KiwixDialog
 import org.kiwix.kiwixmobile.core.utils.ServerUtils
 import org.kiwix.kiwixmobile.core.utils.SharedPreferenceUtil
+import org.kiwix.kiwixmobile.core.utils.dialog.AlertDialogShower
+import org.kiwix.kiwixmobile.core.utils.dialog.KiwixDialog
 import org.kiwix.kiwixmobile.core.zim_manager.fileselect_view.SelectionMode
 import org.kiwix.kiwixmobile.core.zim_manager.fileselect_view.adapter.BookOnDiskDelegate
 import org.kiwix.kiwixmobile.core.zim_manager.fileselect_view.adapter.BooksOnDiskAdapter
@@ -234,6 +234,7 @@ class ZimHostFragment : BaseFragment(), ZimHostCallbacks, ZimHostContract.View {
   override fun onDestroyView() {
     super.onDestroyView()
     recyclerViewZimHost.adapter = null
+    hotspotService?.registerCallBack(null)
     presenter.detachView()
   }
 
diff --git a/core/src/main/java/org/kiwix/kiwixmobile/core/settings/CorePrefsFragment.java b/core/src/main/java/org/kiwix/kiwixmobile/core/settings/CorePrefsFragment.java
index 413b39c15..aa6aca286 100644
--- a/core/src/main/java/org/kiwix/kiwixmobile/core/settings/CorePrefsFragment.java
+++ b/core/src/main/java/org/kiwix/kiwixmobile/core/settings/CorePrefsFragment.java
@@ -26,7 +26,6 @@ import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.webkit.WebView;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.content.ContextCompat;
 import androidx.preference.EditTextPreference;
 import androidx.preference.ListPreference;
@@ -46,10 +45,10 @@ import org.kiwix.kiwixmobile.core.CoreApp;
 import org.kiwix.kiwixmobile.core.NightModeConfig;
 import org.kiwix.kiwixmobile.core.R;
 import org.kiwix.kiwixmobile.core.main.AddNoteDialog;
-import org.kiwix.kiwixmobile.core.utils.dialog.DialogShower;
-import org.kiwix.kiwixmobile.core.utils.dialog.KiwixDialog;
 import org.kiwix.kiwixmobile.core.utils.LanguageUtils;
 import org.kiwix.kiwixmobile.core.utils.SharedPreferenceUtil;
+import org.kiwix.kiwixmobile.core.utils.dialog.DialogShower;
+import org.kiwix.kiwixmobile.core.utils.dialog.KiwixDialog;
 
 import static org.kiwix.kiwixmobile.core.utils.ConstantsKt.RESULT_RESTART;
 import static org.kiwix.kiwixmobile.core.utils.SharedPreferenceUtil.PREF_NIGHT_MODE;