diff --git a/app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsActivity.kt b/app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsActivity.kt
index 067e8965c..d6565d6cd 100644
--- a/app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsActivity.kt
+++ b/app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsActivity.kt
@@ -7,6 +7,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.widget.Toast
+import androidx.appcompat.app.AlertDialog
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.net.toFile
 import androidx.lifecycle.lifecycleScope
@@ -120,7 +121,18 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 		}
 		R.id.action_save -> {
 			manga?.let {
-				DownloadService.start(this, it)
+				val chaptersCount = it.chapters?.size ?: 0
+				if (chaptersCount > 5) {
+					AlertDialog.Builder(this)
+						.setTitle(R.string.save_manga)
+						.setMessage(getString(R.string.large_manga_save_confirm, chaptersCount))
+						.setNegativeButton(android.R.string.cancel, null)
+						.setPositiveButton(R.string.save) { _, _ ->
+							DownloadService.start(this, it)
+						}.show()
+				} else {
+					DownloadService.start(this, it)
+				}
 			}
 			true
 		}
diff --git a/app/src/main/java/org/koitharu/kotatsu/utils/ext/ContextExt.kt b/app/src/main/java/org/koitharu/kotatsu/utils/ext/ContextExt.kt
index 4fa3a83b5..adad2dfe9 100644
--- a/app/src/main/java/org/koitharu/kotatsu/utils/ext/ContextExt.kt
+++ b/app/src/main/java/org/koitharu/kotatsu/utils/ext/ContextExt.kt
@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.utils.ext
 import android.content.Context
 import androidx.appcompat.app.AlertDialog
 
+@Deprecated("Useless")
 fun Context.showDialog(block: AlertDialog.Builder.() -> Unit): AlertDialog {
     return AlertDialog.Builder(this)
         .apply(block)
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 48a19b724..787cc3676 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -109,4 +109,6 @@
     <string name="about_app">О программе</string>
 	<string name="show_notification_app_update">Показывать уведомление при наличии новой версии</string>
 	<string name="open_in_browser">Открыть в браузере</string>
+	<string name="large_manga_save_confirm">В этой манге %d глав. Вы уверены, что хотите сохранить их все?</string>
+	<string name="save_manga">Сохранить мангу</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a94b43445..f1b662c3d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -110,4 +110,6 @@
     <string name="about_app">About</string>
 	<string name="show_notification_app_update">Show notification if update is available</string>
 	<string name="open_in_browser">Open in browser</string>
+	<string name="large_manga_save_confirm">This manga has %d chapters. Are you want to save all of it?</string>
+	<string name="save_manga">Save manga</string>
 </resources>
\ No newline at end of file